Jazz Fretless Bass Groove on Suspended Chords – Bass Practice Diary – 5th March 2019
This week I’ve been writing original basslines on sus chords. And I’ve featured one of my lines in this video. This is the second time I’ve featured a fretless bass groove in my practice diary, and I’m planning to do many more in a variety of different styles and feels. You can find my first fretless bass groove video here.
When I’m practicing a particular harmony, chord progression or time feel, I like to compose original bass grooves that fit in to what I’m working on. This week I was working on suspended chord sounds. And here is an original bassline I’ve written on four sus chords. Gsus, Bbsus, Dbsus and Esus.
Each chord is two bars, and I’ve written the bass TAB for 4 string fretless bass. I’ll write more about the theory of playing on suspended chords in next week’s practice diary. But for now, this is just a mellow jazzy bassline that you can learn and practice. If you like it!
Quartal Chord Voicings on Bass Guitar – Bass Practice Diary – 26th February 2019
I haven’t done a video about bass chord voicings for a while. So, this week I’ve decided to practice some of my favourite jazz chords, quartal chord voicings. Quartal harmony is a jazz term which means harmonising chords in intervals of a fourth.
I did a video recently about playing modern jazz lines using 4th intervals. But I thought after making that video that I wasn’t telling the full story about using 4ths in modern jazz. The quartal chord voicings themselves create a very distinctive modern jazz sound. It’s instantly recognisable once you become familiar with the sound.
Chords are traditionally voiced in intervals of a third. Using quartal voicings in jazz became popular in the 1960’s after Miles Davis made quartal chord voicings a feature of his composition So What from the 1959 album Kind of Blue.
Quartal harmony was a sound that then became associated with the great John Coltrane Quartet of the early to mid 1960’s. The chords were supplied by pianist McCoy Tyner, who is synonymous with quartal harmony, and one of my all time favourite jazz pianists.
McCoy Tyner was using these voicings at a time when the Coltrane Quartet was playing a lot of modal jazz. Meaning that there weren’t lots of chord changes. And the emphasis was more on scalic improvisation over static harmony. So What is also a modal jazz piece. So, if you’re looking to apply some of these quartal chord voicings, then modal jazz tunes are a good place to start.
Quartal Harmony on Bass
The bass is setup for playing quartal chord voicings because the strings are tuned in intervals of a fourth. Which is why it amazes me that more bass players don’t use quartal chord voicings. Many of the chord voicings in the video can be played with just one finger. But despite this simplicity, they create a sophisticated jazz harmony sound.
Here is an A major scale harmonised in 4ths.
In the video, I’ve used the open A string as a root note underneath all of these voicings.
When you play this, it doesn’t sound like a typical major scale harmonisation. That’s what’s so great about quartal harmony. You can take simple harmony, like a major scale, and completely change it’s character, without needing to change or add any notes.
It works for all of the modes of the major scale. Here is the Dorian mode harmonised in 4ths.
Applying Quartal Harmony to Jazz
I’ve already mentioned that quartal chord voicings are extremely well suited to modal jazz. If, for example, you’re playing a modal jazz composition with long periods on a minor seventh chord. Like So What or John Coltrane’s Impressions. Then you’re faced with a challenge of how to make just one chord sound interesting.
One solution would be to apply the dorian chord voicings that I’ve written out in the example above. It gives you seven different options for voicings that you could play over a single minor seventh chord (Am7 in the example above). You could use any or all of these voicings to help create a feeling of movement in the otherwise static harmony.
You can apply quartal harmony to virtually any scale or mode. In this next example I’ve applied it to an A harmonic minor scale.
The same chord voicings can also be applied to any of the modes of the harmonic minor scale, which includes the altered scale.
One of the fourth intervals in the harmonic minor scale actually comes out as a major third. So, some of the voicings in the example above are not strictly quartal. Because they mix fourths with a third. But it still creates some interesting sounds and you can do your own experimenting to decide which of the voicings are useful.
Auld Lang Syne on 6 String Bass – New Year Bass Practice Diary – 1st January 2019
Here’s my bass arrangement of Auld Lang Syne. This is my second New Year as a parent. Since becoming a parent my New Year’s celebrations have become much more mellow. I haven’t taken a New Year’s Eve gig these last two years because parental responsibility takes precedent.
It feels strange, because I’ve been playing somewhere on New Year’s Eve for at least 10 straight years prior to this. But these days I can’t think of a better way to ring in the New Year than with a nice mellow arrangement of Auld Lang Syne on my six string bass.
Auld Lang Syne
There are a number of ways you can approach harmonising this tune, and I didn’t spend very long coming up with this arrangement. I didn’t write the arrangement down, I just worked out a few things by ear before I hit record.
The loose structure of the arrangement is as follows. I played the first half of the song solo, using simple I, IV, V harmony. I intentionally set it in a key where I could utilise the open strings as bass notes. Then I added some jazz chords and alterations in the second half and immediately overdubbed the melody for the second half of the tune.
This was actually one of the quickest videos I’ve done. The shooting of it didn’t take more than five minutes. But I’m happy with the results. Sometimes playing something “off the cuff” is the best way rather than overthinking it.
I hope you enjoy this bit of bassy mellowness, whether your New Year’s Eve is mellow like mine or a bit more exciting. And as I stated in the video, I hope that the coming year gives you many opportunities to play the bass!
Jazz Blues Lick on Fretless Bass – Bass Practice Diary – 13th November 2018
This week I’ve done a detailed breakdown of a jazz lick that I played on a Bb blues progression in last week’s Bass Practice Diary. The lick combines the diminished scale with the blues scale which creates a jazz blues sound.
I’ve played the lick on my Warwick Thumb SC six string fretless bass. But I’ve transposed the lick down an octave so it can be comfortably played on a four string bass and I’ve written the TAB for four string bass in standard tuning.
Jazz Blues Lick
The concept of the blues solo that I played last week was combining the diminished scale and the blues scale. The reason why I’ve highlighted this very short lick is because it combines both the blues scale sound and the diminished sound in one very short lick. The Diminished scale provides a jazz sound while the blues scale keeps the lick rooted in the blues.
If you want to know more of the theory then check out last week’s video, but for now I’ll just take you through the lick.
The lick is played on a Bb7 chord but it starts on a G. The lick actually starts before beat one. The way I played it last week, you can think of the G as functioning as the major 3rd of the Eb7 chord in the preceding bar. However you could also play the same note on a Bb7 chord and think of it as a 13th.
From that note it goes up using the diminished scale. The second note Ab lands on beat one and it’s a chord tone, the dominant 7th. If you followed the sequence of the scale then the next note would be the root note Bb, but I’ve chosen to skip the root and go to the next note in the scale which is the b9, B natural (Cb).
Then it’s D and F. Two chord tones, major 3rd and 5th. And both feature in the diminished scale.
It’s worth mentioning at this point, that it’s the b9 that’s creating the diminished sound. All of the other notes are chord tones. They exist in the diminished scale, but without the b9, they would just sound like an arpeggio. It’s amazing what the presence of just one outside note can do to change the sound of a harmonic phrase.
For more of the theory about inside and outside notes, check out these two posts.
The Blues has its own rules when it comes to harmony. The blues scale is essentially a minor pentatonic scale with one extra note. An outside note, the b5.
If you want to define the sound of the blues, then a good place to start is by playing the minor 3rd from the blues scale on a dominant 7th chord containing a major 3rd. You could argue that anytime you mix minor and major 3rds on dominant chords you are playing a blues sound.
Going back to my lick, I’ve just played a major third and then the 5th of the Bb7 chord, F. The note F exists in the Bb blues scale, the Bb diminished scale and the Bb7 chord. So it’s a very safe note. I’m using it here to transition from playing the diminished scale into playing the blues scale.
From the F, the lick simply goes down the blues scale until it gets to the root note Bb. It includes the minor third Db, so the riff includes both major 3rd, D and minor 3rd Db. Which, as I’ve mentioned, creates a blues sound.
The diminished scale, and especially the b9 from the diminished scale, create a jazz sound. While the presence of both major and minor 3rds creates a blues sound. And both of these sounds are combined in one very short lick, just nine notes altogether. Which I think is quite cool.
I played several licks with a similar idea in last week’s video and I’ve transcribed one full 12-bar chorus. I think that the lick that I’ve chosen is the shortest and most succinct. Which is why I chose this one. I hope you’ve found this helpful!
Use the Diminished Scale to Play Jazz – Bass Practice Diary – 6th November 2018
This week I’ve been practising using diminished sounds to play on dominant 7th chords in jazz. If you want to bring a more jazz sound to your playing, using the diminished scale is a great way to do it. Because it creates an interesting series of inside and outside notes when played on dominant chords.
What is the diminished scale?
The diminished scale is what I would call a symmetrical scale. It sounds like it should be something very complicated but it’s actually very simple. In many ways it’s even more simple than a major scale.
Symmetrical scales are scales that use the same intervals repeatedly. In the case of a diminished scale the intervals are a half tone (semi tone) and a whole tone. Symmetrical scales are also called modes of limited transposition or fixed transposition, which sounds even more complicated. But it still isn’t. It simply means that there are a very limited number of different ways you can transpose the scale. For example, because of the repeating intervals a G diminished scale is the same as a Bb diminished scale and Db and E diminished scales. So the idea of playing in 12 keys is a bit redundant. Another example of a mode of limited transposition is the whole tone scale. You can also use the whole tone scale to play on dominant 7th chords, but that’s another video for another day.
There are only two different ways you can play a diminished scale, you can either start with a half tone or you can start with a whole tone. After that it just repeats the same patterns over and over. Which makes it quite easy to play, as I said before, in many ways easier to play than a major scale.
Here is an example of an arpeggiated diminished scale pattern that I featured in the video.
How to practise a diminished scale
In the video I’ve used the example of a Bb7 chord. Here is a diminished scale starting on a Bb and beginning with a half tone.
I don’t always think about the scale starting on the root note. Often I will use the major third (D natural in this case) as a jumping off point. And in that case I will think of the scale as starting with a whole tone.
Another approach that I use is to start on the #9 or minor third. In this case Db. In this case the first two notes of the scale will be the minor 3rd (an outside note) resolving to the major third (a chord tone). This is a real signifier of the blues and it will help give your diminished licks a bluesy flavour.
How to apply the diminished scale in jazz
As I’ve previously mentioned, the diminished scale most commonly gets applied to dominant 7th chords in jazz. Here is the same Bb half/whole scale written out with the intervalic relationships to a Bb7 chord written over each note.
As you can see, the scale gives you all of the standard chord tones in a Bb7 chord. Root, major third, 5th and dominant 7th. However, it also includes one unaltered chord extension, the 13th, and three altered chord voicing, b9, #9 and #11. It’s these altered extensions that give the diminished scale a jazz flavour when you play them on a dominant 7th chord.
The best way to demonstrate this is by playing a jazz blues, because the blues uses dominant 7th chords a lot. I’ve transcribed a chorus of blues solo that I improvised in which I was using both the diminished sounds and the more traditional blues sound of the blues scale.
Check out next weeks Bass Practice Diary 30 if you want to look more at some of the diminished blues licks I’m playing here.
Jazz on Three Basses – Fretless Bass, Double Bass & Acoustic Bass Guitar – Bass Practice Diary – 23rd October 2018
This week I’ve made a very quick video to demonstrate the bass as an instrument. Specifically, it’s potential to play more than just bass lines. So, I’ve played a jazz standard on three different basses. Two of them are fretless, two of them are acoustic, two of them have six strings and only two of them are bass guitars! Read on to find out more!
If you’ve followed my previous posts, you’ve probably realised by now that I don’t feel that bass guitars should be restricted to playing only bass lines. My instrument is the bass guitar. And the irony is not lost on me that in this video, all of the harmony is played on bass guitars except the bass line. Which I’ve played on an upright acoustic bass.
The Bass Line played on Double Bass (Upright Bass)
The reason that I’ve done this is not because I think I’m a good upright bass player. I don’t think that. I don’t have time to practice the upright nearly enough. My upright bass skills will never be better than average at best. The reason is because it’s the traditional role in jazz for the acoustic upright bass to take the bass line. And I know from years of experience, that if you try and play jazz gigs on bass guitar, acoustic bass guitar or even electric upright bass, you will very often be treated as the guy who is standing in because the band couldn’t book an acoustic double bass player.
I started to study upright bass when I was already at music college, and I did it with the aim of getting more jazz gigs. And it worked! For a while I was playing a lot of jazz gigs in London with my upright bass. But I very quickly stopped enjoying it. It’s a very difficult instrument to transport, especially when it’s impossible to park in Central London. The gigs didn’t tend to pay very much and the practice that I was having to put into the upright bass was taking away from time spent with my first instrument, the bass guitar.
So I gave up doing gigs on upright bass and I started telling people who were calling me for jazz gigs that I could do gigs on Electric Upright Bass (much smaller and more portable), but not acoustic. Needless to say, the jazz gigs dried up almost instantly.
I really enjoy playing acoustic upright bass at home, for fun. Although, I get precious little time to do it and I’m very rusty and out of practice. I’ve kept my upright bass all these years to play at home, even thought I almost never do gigs with it anymore. (I sold my electric upright).
Bass Guitars in Jazz
Do I regret my decision to stop taking gigs on acoustic upright bass? Not for a single solitary second. The upright bass is undoubtedly a beautiful instrument, but it isn’t my instrument. I’m a bass guitar player and I got to the point where I really didn’t look forward to doing gigs on upright bass. I found them to be a lot more hassle than they were worth financially.
But all this underlines the point, that as bass guitar players, we shouldn’t be aiming to take on the role of the upright bass in jazz. It’s not what jazz bands are looking for. Jazz bands that are progressive enough to want a bass guitar in the band are clearly looking for something different. Hence, the reason why I’ve played all of the harmony on bass guitars in the video apart from the bass line.
I’ve always believed that what we should strive to play is music, not just bass lines. Bass lines are an important part of music, they’re the foundation of most music. But there’s so much more music that we can also explore. And I don’t see any good reason why I shouldn’t explore all music, just because I choose to play an instrument that has the word bass in it’s name.
With that in mind, I decided to make a very short and quick demo of three basses playing a jazz tune (Solar by Miles Davis). Each bass showing a different facet of what a basses is capable of. As I’ve already described, the double bass (upright bass) is playing the bass line, the roll traditionally reserved for double bass players in jazz music.
The Acoustic Bass Guitar
The acoustic bass guitar is doing what jazz musicians term comping. Comping is basically when you use chord voicings to fill out the harmony. It’s a roll traditionally taken by piano or guitar. I’ve featured my acoustic bass guitar in a couple of recent posts. I’ve talked about how I use it as a harmonic accompanying instrument. So, rather than repeating myself, I’ll just leave these links for you to explore.
In the video the fretless electric bass is taking the rolls of melody and soloist. I suppose you could see this roll as being traditionally taken by vocalists and horn players. But, there’s actually quite a rich history of melodic bass playing in jazz. So it’s actually not that unusual to hear a bass take this role. In jazz usually everyone in the group gets a solo eventually!
Read this post to learn my thoughts about using fretless bass as a melody instrument.
Chord Extensions on 4, 5 & 6 String Bass Guitars – Bass Practice Diary – 25th September 2018
I’ve done a few videos in the past about playing chords on the bass. This week I’m demonstrating a fairly simple approach you can use to playing jazz chord extensions. The system involves using two different voicings of 7th chords. Each using three notes, root, 3rd and 7th. Then adding chord extensions like 9ths, 11ths and 13ths as well as common alterations.
A Very Quick Guide to Jazz Harmony – 7th Chords
Chord extensions and alterations are synonymous with jazz harmony. 7th chords form the foundation of most jazz chords and I’m going to look at the three most common types of 7th chord. They are Major 7th, Minor 7th and Dominant 7th.
7th chords are four note chords, all of the chord types mentioned above contain root, 3rd, 5th and 7th. The root and 5th are the same in all three chord types, so the 7th chords are defined by the thirds and sevenths. Major 7th chords have a major 3rds and 7ths. Minor 7th chords have minor 3rds and 7ths and dominant 7th chords have major thirds and minor 7ths.
There are other types of 7th chords, but in this post I’m only going to look at these three types because they’re the most common.
When voicing extended chords it’s extremely important to know which notes to leave out. Regardless of whether you play 4, 5 or 6 string basses, you only have a finite number of strings. I recommend that you don’t try to cram every note from an extended chord into a chord voicing. It’s rarely a useful or practical approach.
The first note to leave out is the 5th, because it’s the same in each chord type. It doesn’t tell you anything about the chord. So, when I voice 7th chords, I voice them as three note chords, root, 3rd and 7th.
Assuming that you keep the root as the lowest note, that means you can voice a 7th chord in two different ways. The first way is with the 7th on top, as demonstrated in the three diagrams below.
The reason that I’ve voiced these chords on the 2nd, 3rd and 4th strings is so that I can use the first string to add a chord extension. These voicings work well for 9th chords. The 9th above my root note A is the note B played on the 16th fret of the first string. You can add this note to each of the chord types and you get these chord voicings.
There are two alterations you can make to the 9th in the dominant 9th chord. You can sharpen it to make an A7#9 chord or you can flatten it to make an A7b9 chord.
Voicing 7th Chords With the Third on Top
I stated previously that there were two ways I was going to voice the 7th chords. The first was with the 7th on top. Now I’m going to make the 3rd the highest note. I’ll play the root and 7th in the same place, but I’ll move the third up an octave, from the third string onto the first string.
In these voicings the 3rd string is not being used. So I can add a chord extension to the 3rd string. An obvious one to use is an 11th, because it sits comfortably in these chord shapes.
The natural 11th sounds good in a minor 7th chord. But, it doesn’t work so well on chords with major 3rds. So, for the major 7th chord I’ll add a sharpened 11th, which creates a lydian sound.
The sharpened 11th also works well on the dominant and minor 7th chords, and in these cases the sharpened 11th can also be described as a flattened 5th. So, I can create four new voicings by adding either a sharp or natural 11th to the 3rd string.
Chord Voicings for 5 String and 6 String Bass
All the voicings I’ve played so far can be played on 4 string bass. However, more strings means more potential chord voicings so I’m going to look at some voicings that will only work on 5 and 6 string basses.
First I’m going to take a couple of the 11th chords from the previous examples, and move the 11th up one octave. So, in the following voicings the 11th is the top note above the 3rd.
Finally I’m going to look at some voicings for 13th chords. The 13th is basically the same as a major 6th which is a note that can work on major, minor and dominant chords.
The voicings below are all dominant 13th chords. In each voicing the 13th is played as the highest note on the 1st string. It can be altered by flattening it as I’ve done in the second voicing. And, it can also be combined with the 9th, as I’ve done in the final voicing.
One big benefit of playing chord voicings on a 6 string bass is that you can play multiple chord extensions as I have in the final A13 voicing.
Acoustic Bass Guitar – Bass Practice Diary – 18th September 2018
I wanted to put out a video where I talk about acoustic bass guitars. What are they for and how to use them? I’ve been playing acoustic bass guitars for more than half of my life and for a long time I struggled to figure out exactly how to get the best out of them. Finally after close to twenty years, I feel like I have a clear idea of how I like to play acoustic bass guitar. And more importantly, why I like use them.
Every Instrument Has it’s Own Identity… Right?
I feel that the acoustic bass guitar hasn’t yet fully found its own identity. Some people like to use it as a way of sounding more like an upright bass, I would never use it for that reason. Partly because I don’t think it sounds very much like an upright bass. But also because I have an upright bass. Conversely, some people play it like it’s an electric bass. But it isn’t either of those things. So, where’s it’s identity as an instrument?
We don’t even seem to have decided what are the best strings to use. Many acoustic basses are sold with bronze coloured strings like an acoustic guitar. But I’ve heard bass players and technicians tell me that they use electric bass strings on their acoustics because they think they work better.
It’s still a fairly young instrument. Its not like the acoustic guitar and the electric guitar. The acoustic guitar has existed much longer than the electric guitar and clearly has a very strong identity of it’s own. But the acoustic bass guitar doesn’t have the same extensive history.
I see people on the internet trying to do original things with acoustic bass guitars. Maybe we’ll look back in twenty or thirty years and we’ll clearly be able to see where the acoustic bass guitar was heading. But for now I see a lot of people trying things. Like the Andy McKee/Newton Faulkner acoustic guitar thing. Where you strike the body of the instrument with your hands to imitate drum and percussion sounds. Which sounds cool but I think it works better on acoustic guitars. Or I see people playing slap bass techniques, which I think work better on electric bass. It all sounds good but I’m not sure it’s where the identity of the instrument lies.
Why I Play Acoustic Bass Guitars?
Because I love having an acoustic instrument that I can express myself on. There’s so much I can do on my acoustic bass guitar that I can’t do on an upright bass. Especially relating to playing chords and arranging solos. You can arrange entire pieces on solo acoustic bass guitar. You can also sing with an acoustic bass guitar.
I would always choose to play mine either on my own or as part of a small group. A duo or probably maximum a trio. I wouldn’t choose to play it as part of a larger group. I just think that the subtleties get lost. I think that if you’re playing in a larger group you’re probably better off playing electric basses or upright basses.
A big development for me was when I switched to playing a six string acoustic bass. I’ve been playing six string electric basses since I was a teenager. But, I only got this Warwick Alien Deluxe six string acoustic bass guitar about five years ago. I think it’s only in relatively recent years that six string acoustic bass guitars are being manufactured at an affordable price and are good enough quality to perform with.
The Warwick Alien acoustics really are magnificent instruments. They’re well balanced and playable and they don’t cost a fortune.
He started his career as an upright bassist and he switched to electric bass and then acoustic bass guitar. He has a very unique style and he seems to have found a unique use for an acoustic bass guitar. But whether his style will be taken on by others and turned into an identity for the instrument remains to be seen.
Charlie Parker is a pioneer of modern jazz and one of the greatest saxophonists in history. Alongside trumpeter Dizzy Gillespie he pioneered the genre called Bebop. His compositions provide a musical and technical challenge to perform on bass, especially fretless bass. But doing so will improve your technique as well as help you learn the language and phrasing of modern jazz.
The Influence of Jaco Pastorius
I first started learning Charlie Parker melodies on bass when I was in my teens after I discovered Jaco Pastorius’ debut, self titled album. Track 1 on the album was Donna Lee. The melody was played by Jaco on a fretless electric bass. Like many other bass players, hearing this was a revelation to me. He took the bass out of it’s traditional role and elevated it to the level of a jazz solo instrument. I immediately decided that I needed to try doing the same thing.
So I used a Jazz Real Book to start working out jazz bebop melodies on my bass. I didn’t start with Donna Lee. It was the concept of playing jazz melodies on bass that I wanted to emulate, not necessarily that particular tune. Although I did get around to learning Donna Lee soon enough.
The first bebop tune I learned was called Tricotism, by the legendary double bass player Ray Brown. I figured I should start with a piece that was created for bass. Having done that I then learned the tune Confirmation by Charlie Parker. You hear me play an excerpt at the end of the video.
Why Play Charlie Parker Tunes on Bass?
I suppose the simplest answer is, because I think they sound really cool. Especially on fretless bass. But there are plenty of other great reasons to try this out. First, it is fantastic for improving your left hand technique. To play these tunes on bass you need to organise your left hand extremely well. Each tune forces you to practise spreading out your fingers, playing one finger per fret positions and shifting quickly and smoothly between these positions.
If you’re not sure what I’m talking about, check out my free video lesson on Left Hand Techniques. The video begins with me playing another Charlie Parker tune called Anthropology on a 4 string bass.
How do You Start Playing Charlie Parker Tunes on the Bass?
Slowly, is always good advice. Take it one phrase at a time and work out good left hand fingerings for each phrase. It’s so important to have a well organised left hand in order to play these melodies.
If you can read music, you can start with a jazz Real Book. That’s how I started, and as I understand it, that’s how Jaco started as well. I don’t know if they had Real Books back in the 70’s but I understand that he had a book with the melodies in. You can get bass clef versions of most of the Real Books now, which is a big advantage. As a teenager I only had a treble clef Real Book and it took me a while to work out the melodies because at that time my treble clef reading was nowhere near as good as the bass clef.
Other books available include the Charlie Parker Omnibook which also comes in a bass clef version. It goes into each tune in a lot more detail than the Real Books because it includes transcriptions of both the melodies and solos. However, it’s not my favourite book because it doesn’t use key signatures. So each transcription contains hundreds of accidentals (sharps and flats) written throughout the music.
If you’re not a reader then the book to get is called Charlie Parker for Bass. It includes TAB and also features solo transcriptions, arranged for 4 string bass.
Combine Bass and Melody for Solo Bass- Bass Practice Diary – 19th June 2018
This week I’ve been working on arranging jazz melodies for solo bass. I’m incorporating both bass and melody parts into my solo bass arrangements. To help me, I’ve been studying the great jazz guitarist Martin Taylor and specifically his book called Beyond Chord Melody.
Why arrange music for solo bass?
I’ve always felt that 6 string bass guitars are very well suited to being played solo. In many ways better suited than guitars, because there’s the potential to play bass lines in the lower register. I often get comments about being like a guitarist when I play my 6 string basses. And many people can’t understand why I don’t just play the guitar when I play in this style.
It’s not a comparison that I find in any way insulting. I do play the guitar and I love the guitar. But I prefer the bass. And I arrange music for solo bass because, in many musical situations, I prefer the sound of solo bass. It’s also a less common sound because fewer people do it. And there’s nothing more interesting to me than hearing music that I haven’t heard before.
All of my 6 string basses have a range that goes to at least a C above middle C. So there’s more than enough range to arrange melodies in the high male voice tenor voice. And there’s the mid range that is ideal for piano style chord voicing.
Martin Taylor is a supremely talented musician, best known for playing solo jazz arrangements on guitar. It would be hard to find a better expert for arranging solo jazz on any instrument. I think it’s so important to study great musicians of all instruments and styles if you want to become a really rounded musician.