The Major Scale for Bass

The Major scale (Ionian mode) is seven distinct notes plus an eighth that duplicates the first an octave higher, and it is one of five essential scale families for bass — see the bass scales hub for the full map. Getting your major scale bass lines right repays the effort many times over: it became the anchor of Western music during the common practice period (1600–1910), and the intervals that build it give it a certain brightness — a lift, compared with the smaller, darker intervals of the minor scales — while the position of its two semitones is what sets up the tonic–dominant relationship that so much of Western harmony hangs on.

The Ionian mode can trace its ancestry all the way back to Mesopotamia and ancient Greece.

The major scale’s origins: set in stone

“Our next stop on our journey of scales is in Ancient Mesopotamia, with a clay tablet (catalogued as CBS1766) dated around 600 BC. An intriguing irregular seven-pointed star and enigmatic matrix of numbers was initially thought to be a form of astronomical tablet, relating perhaps to the days of the week and their nomenclatural and orbital connections to celestial bodies. Later scholars have put forward the hypothesis that it is instead (or in addition) a guide to musical scale construction, and this is supported by other contemporaneous tablets and a contextual understanding of Babylonian music.”

Milton Mermikides, 2024

Mermikides’ own footnote to that lecture widens the picture considerably: estimates for CBS 1766’s actual date range from 529 to 1500 BC, so “around 600 BC” is one point within a much broader window, not a settled fact.

There is also evidence that mankind was using forms of the major scale even further back in time than that:

“We have another — and beautifully instructive — line of evidence in early scale construction. Jiahu was a significant and sophisticated Neolithic settlement near the Yellow River in North China, inhabited from 7000–5500 BC. The latest flute of the lineage (M253:4, from around 5800 BC) approximates to nine of the twelve notes found on a piano (or a contemporary flute), all within one octave, and so could imply different scales off the same root, or even different keys, centred around three different roots. For each flute, the number of unique notes or pitch-classes (treating octaves as the same) and the number of interval types is also shown. The final flute allows the creation of three seven-note scales, familiar to the contemporary ear, as well as a range of expressive chromatic colours.”

Milton Mermikides, 2024

Why did the major scale take hold?

But why has the major scale become one of the cornerstones of Western music (even though, as we saw in The History of the Minor Scale, its own popularity really only grew from around 1600 onwards) — and indeed of many other cultures besides?

It is possible that the major scale emerged simply through the technique of stacking perfect 5ths together — which is also how the West arrived at its twelve notes to the octave.

There have been several theories about the scale’s emergence — among them, that its tones are already present in the overtone series of the harmonic series. Interestingly, the 4th and 6th scale degrees the major scale needs are not strongly represented early on in that series. What we do get, if we string together the notes and partials that are strongly represented and approximate them to our equal temperament, is the Lydian dominant scale, or acoustic scale (1, 2, 3, ♯4, 5, 6, ♭7).

The plain Lydian scale — built the same way, from a chain of perfect 5ths, but keeping the natural 7th rather than flattening it — is the scale George Russell held up as music’s true “unity scale of nature” in his Lydian Chromatic Concept.

There is also a theory that the major scale developed as an extension of our own human voices:

“The fields of music cognition and psychoacoustics argue that Western musical scales are ‘natural’ because they are derived from the physics of sound via the harmonic series. Harmonicity-based theories of music are predicated on the idea that, because common Western scale-intervals are specifiable as simple harmonic ratios (e.g., 3:2 for the perfect fifth), they must be given to us by nature.”

“An alternative to the accepted view that music is an accommodation to the perception of sound is our proposal that music is an accommodation to the production of vocally-generated sounds during social communication, as enabled by novel evolutionary changes to the neuro-laryngeal system. While we are unable to state with certainty that the voice was the original musical instrument, we will base our theorising on the plausible assumption that evolutionary changes to the vocal mechanism led to the emergence of both music and speech.”

Brown, S. & Phillips, E., 2023

I find this a fascinating idea — the possibility that vocalisations came long before instrumentation seems entirely plausible.

We also have Isaac Newton — influenced, as he was, by the ancient Greek concept of musica universalis, the “harmony of the spheres” — to thank for the rainbow being codified with seven colours, thanks to his interest in the diatonic scale and its seven intervals.

Getting back to the major scale’s journey through history: it really came to prominence during the common practice period, 1600–1910 (see my article on Diatonic), and is only recently beginning to decline in favour of minor keys in the pop world.

Having said that, here are some notable uses of the major scale in pop bass lines: “ABC” and “I Want You Back”, “Express Yourself”, as well as tunes such as “December, 1963 (Oh, What a Night)”, “There’s Nothing Like This” or “The Joker” and “Piano Man”.

What do you actually need it for?

Okay, that’s the history out of the way — what about the major scale as a useful musical tool for us bass players?

As I have mentioned before, using any scale, a bass player usually has goals or aspirations that fall into three choices (or all of them put together!) of practical need, skill acquisition and learning:

1. Playing bass lines, or riffs, for your own original material.
2. Playing bass lines, or riffs, that are already written.
3. Having to jam, or solo, on the spot.

Bearing this in mind, we will look at:

• The major scale’s construction.
• Ear training, to become more familiar with the intervals of the major scale.
• Different ways of playing the scale in different positions on the neck.
• The modes built from each of its scale degrees.
• Triads and common chord progressions that come from those.
• Practical applications of technique and practice ideas, to put everything together.

Construction: two tetrachords

A good knowledge of scales has always been of benefit to bass players — whether for improvising, sight-reading, soloing, writing original bass lines, ear training, analysis, or working out bass lines by ear. Being able to call on, or recognise, all the various sequences of notes that scales contain is a valuable skill.

This step-by-step guide helps you understand the relationship between the intervals that give each scale its own individual character and tone colour.

The major scale, or Ionian mode (the name describes its function more than anything else), and all of the intervals, modes and chords that can be constructed from it, are referred to as being “in the key”, or diatonic.

The major scale formula is built from seven steps — tone, tone, semitone, tone, tone, tone, semitone:

The construction of the major scale can also be described as two identical tetrachords (a tetrachord is simply a four-note scale — tetra meaning four, chord here meaning strings), separated by a tone, or whole step: the lower major tetrachord (C D E F), plus the upper major tetrachord, the same shape, a tone higher (G A B C). Put the two together and you have the Ionian mode — the major scale.

Ear training and the intervals

Let’s take a closer look at the intervals that make up the construction of the major scale.

From the C root, or tonic, we have the following — with an ear-training hook for each, so you can hear as well as count every interval:

Major 2nd — supertonic — 2 semitones

Supertonic means above the tonic. The major 2nd is a tendency tone — meaning it has a harmonic, gravitational pull, mostly down to the root, though it also moves to the 3rd in some melodies: listen to “People”, or “24 Hours from Tulsa”. The major 2nd used as an appoggiatura (a leaning, dissonant note on the beat) is a great way to think about how the bass uses a flat-7th-to-root riff in “Low Rider” and the Starsky and Hutch theme — although that particular move is better described as a retardation. Historically considered a dissonant interval, it is these days accepted as an added 9th — consider the guitar part to “Message in a Bottle”, or “Every Breath You Take”.

The first two notes of “Strangers in the Night” will get this interval into your ear.

Major 3rd — mediant — 4 semitones

The major 3rd — a chord tone — is one of the most commonly used intervals in Western music; it is also one half of the major/minor tonal system that was established over 400 years ago. The major 3rd is a bright-sounding interval, normally associated with feelings of joy, hope and happiness.

The first two notes of “Oh When the Saints” will get this interval into your ear.

Perfect 4th — subdominant — 5 semitones

The perfect 4th — a tendency tone — gained its name in the Middle Ages, having been regarded as a perfect consonance. That did not last, however: during the common practice period (1600–1910) it came to be regarded more as a dissonance that needed to be resolved, either to the major or minor 3rd. Towards, and after, the twentieth century it was no longer looked on as dissonant, and it became a building block of harmonic structures in its own right, from the tonal ambiguity of Debussy to the jazz of Bill Evans.

The first two notes of the “So What” bass line will get this interval into your ear.

Perfect 5th — dominant — 7 semitones

The perfect 5th — a chord tone, and the 4th inverted — is the most stable and consonant note next to the perfect unison and the octave. As a harmony note it was used in ancient Christian plainchant and in parallel organum — which is perhaps where the “perfect” label came from, derived from its mathematical and acoustic stability — right at the beginnings of Western harmony. These days it is one of the most used intervals in the bass player’s arsenal: listen to “Don’t Forget Me”, or “Happy House”.

The first two notes of “Star Wars” will get this interval into your ear.

Major 6th — submediant — 9 semitones

The major 6th — a tendency tone — has a strong pull back to the 5th scale degree in melody writing: think of the second melodic phrase in “Over the Rainbow”, on the lyrics “way up high”. It can, however, also be a very stable and funky interval for bass parts — “Good Times”, “Addicted to Love” and “Born to Love You” are all good examples.

The first two notes of “My Way” will get this interval into your ear.

Major 7th — leading tone — 11 semitones

The major 7th, or leading tone — a chord tone and tendency tone — is probably one of the most significant intervals in Western tonal music, being the key ingredient of the dominant V7 chord leading to, and resolving on, chord I: the perfect cadence. It is difficult to pitch when singing, so it does not appear all that often.

The first two notes of the chorus of “Take on Me” will get this interval into your ear.

The octave

The octave — a chord tone — is simply a root note doubled in frequency (or halved, for the octave below); another way to think of it is as being 12 semitones from any root. The name itself, from the Latin, refers to the eighth note of our major scale system. Considered the most consonant interval alongside the perfect unison, it is one of the most functional and solid notes in bass parts — think of the majority of disco bass riffs: the classic gallop rhythm of “Dance, Dance, Dance”, “Blue Monday”, or the driving octave of “Filthy/Gorgeous”. The rock world is not short of good examples either — “Immigrant Song” and “My Sharona” come to mind.

The first two notes of “Over the Rainbow” will get this interval into your ear too, taken up to the octave.

Fingerings across the neck

Pay close attention to these intervals while looking at the major scale in different positions on the neck.

There are actually sixteen different ways to play a one-octave C major scale — including three with open strings (this drops to thirteen if the major scale you are playing has no open notes among E, A, D, G in its construction, e.g. B, F♯/G♭ or C♯ major). Here are four of them. Experiment with different fingerings, and see The Infinite Fretboard for more.

The C major scale over one string

The major scale over two strings

The C major scale over three strings

The C major scale over four strings

The major scale over two octaves

There are at least ten different ways or patterns available for the fretting fingers on two-octave scales — here are two.

Here is a look at the major C scale over two octaves. Notice that the fingering is one finger per fret, and that the shifts stay mainly on the D and G strings — this gives the notes of the scale a brighter timbre.

Also notice the use of the 4th finger to shift up in pitch, and the 1st finger to shift down in pitch — this keeps the fretting hand in a good shape, with even spaces between the fingers.

Here is the same major scale again, over two octaves. This time notice that the fingering starts and ends with Simandl (1–2–4) fingering for the first two notes, before moving to one finger per fret — a good way to cross between the two techniques. This time the shifts are more balanced between the A and G strings, giving the scale a slightly darker, more bassy timbre.

As usual, practise this exercise in different keys, with the rhythms suggested below.

Modes of the major scale

All of the other notes within the major scale — each scale degree — may be looked upon as a starting note for a different scale: six remaining letters, another six scales. Think of these as the white notes on the piano: D to D, E to E, and so on. Collectively, these scales are known as modes of the major scale.

Have you ever wondered what really gives the modes of the major scale their individual sound, or tone colour, apart from the obvious major/minor split? It is the grouping of semitones within each scale’s structure, and how that grouping moves from scale to scale — the relationship between the semitone from the 7th (leading note) to the root, and its position within chord V, is really the basis of Western harmony. Tension and release, in turn, affect the chord tones and extensions derived from the other scales. Play them through, emphasising the semitone positions within each one, and you will begin to appreciate its individual, tonal nature. The Fretboard Modemap is a good way to see and hear all seven laid out together.

Here are the same modes again, this time written out in notation and TAB, along with fretboard diagrams:

One bass riff, seven modes

One way to really get to know these scales, and take in their differences, is to play them all over a very similar bass riff pattern. Playing the same riff over all seven modes of the major scale — comparing interval values — also works well if you play all of the modes in one key (C, for instance), in parallel. Playing this exercise against a drone works extremely well, as that really brings out the intervallic differences.

The diatonic circle of 5ths

Some interesting patterns in the modes’ intervals emerge if we arrange the modes of the major scale to align with the diatonic circle of 5ths: it shows that the intervals — travelling clockwise from F round to B — become flatter as they are arranged in 5ths, following the notes of the circle itself, bright to dark. This is also a great way to practise the modes.

Incidentally, playing this circle from A to E, in root notes or triads, anticlockwise, will give you the “I Will Survive” and “Fly Me to the Moon” chord progressions — the only difference being the E7 dominant chord at the end of both tunes.

Triads from the major scale

Here are all of the triads contained within the major scale. It is possible to play all of these triads in position, using one finger per fret (also with Simandl, with a bit of shifting), until the C octave triad is reached, which requires a shift. This employs both the standard 1st (minor) and 2nd (major) finger on the root, as well as the more unusual 4th finger (major and minor) as a root starting point.

Notice how learning these triads opens the door to applying them in the next exercise — music in the real world!

Bars 8 and 9 are the only point of stepping out of position, to play the high C major arpeggio, which then reverses pitch direction and leads back into the rest of the arpeggios, all played in position.

The penultimate bar (15) could either be looked upon as a descending D minor triad with an added leading tone before the C root, or as a descending Bm7♭5 arpeggio — I prefer to think of it as the former, just to keep the focus on triadic movement.

As usual, practise this exercise in different keys, with the rhythms suggested below.

Common chord progressions from the major scale

The 4th and 5th are the most common intervals within all of the modes; these intervals also form part of the primary triads, chords I, IV and V, all of which are major. The primary chords IV and V have the strongest pull back to chord I. The most familiar sound of this progression is probably associated with the blues, but the sheer amount of pop tunes that use it could fill a phone book. However, here are some more common diatonic and familiar chord progressions.

Learning common chord progressions is an extremely effective way to improve:

• Ear training (start with playing the root note only, for each bar).
• Learning songs quickly.
• Learning note names.
• Learning different arpeggio fingerings.
• Improvising.
• Scale and arpeggio practice.
• Being more confident when jamming with other musicians.

All of the triad arpeggios here will take you from the 1st fret to the 12th fret, with a few open-string surprises along the way.

Key signatures of the major scale

The circle of 5ths was originally intended as a way to organise key centres and their sharps and flats in order, as well as to show major keys alongside their relative minor keys. It is, therefore, simply a way to visualise all major and minor scales in order.

It is also an interesting way to visualise chord-choice possibilities, their movements and dominant relationships — every three letters, for instance, form a ii–V–I chord progression, showing the dominant tie to the 5th scale degree as you move anticlockwise:

Two exercises: practising with the major scale

Exercise 1 — breaking the scale into 3rds

These are two of my favourite exercises. Firstly, because both use major and minor scales broken into 3rds, in both double-bass (Simandl) and one-finger-per-fret fingering — juxtaposing linear and vertical pitch approaches up and down the neck, so it is great for note learning and pattern recognition, as well as a good fretting-hand workout, and it highlights the pitch differences between major and minor. Secondly, throwing triplets in makes it a proper picking-finger challenge, which can of course be varied with other rhythmic groupings.

This exercise is a great way to explore the neck, while simultaneously being a very effective technique workout and a good ear-training task. Notice the use of Simandl (1–2–4) fingering and one-finger-per-fret technique — learn both!

As usual, practise this exercise in different keys, with the rhythms suggested below.

Exercise 2 — the dotted-rhythm workout

Here is a good melodic picking and fretting-finger major scale workout. This standard pattern of breaking up the major scale into thirds can be given another level of “desirable difficulty” by using a dotted rhythm.

Why should this be? The dotted rhythm demands slightly faster finger movement than straight quavers or crotchets, for instance. The dot increases the quaver’s value by half its own value, added to its own value (equivalent to three semiquavers tied together), followed by a semiquaver. Reverse this dotted-quaver rhythm and you have what is known as the “Scotch snap”, or “Lombard rhythm” — again, a bit more of a challenge at higher tempos.

The second half of the exercise examines a slightly different “unfolding” pattern of tones and semitones (steps and half steps) — a quite pleasing pattern that appears in many melodies and solos.

As usual, practise this exercise in different keys.

A final mention — rhythm!

This is perhaps the most important ingredient in everything I have mentioned above — an ingredient that may well get you through an audition, put the edge on your performance, or make your own compositions shine: rhythm!

Experiment with all of these rhythms, one to ten, with every scale we have discussed — one rhythm at a time, or in combination — there is a lot of beneficial mileage here for practice and improvising. Bridge the gap between rhythm and harmony to the best of your ability! All the scales above produce common melodic patterns useful for fills or soloing, and playing them with and without a metronome or drum machine — see ours! — will improve dexterity, stamina, evenness of tone and rhythmic precision. They are all good warm-up exercises too.

As with most exercises, they can be expanded by using different rhythms, accenting different beats of the bar, playing in different areas of the neck and in different keys, saying the note names out loud, experimenting with tempo, and using these patterns as the beginnings of improvisation.

One final thought

In a word: melody. Learning tunes, jazz heads or other instrumental lines is one of the most effective and fast music-learning tools you can employ on the bass, using all of the scales and triads above.

Playing melodies on the bass is certainly a very fast way to learn your way around the fretboard — learning melodies really is that important — and it is also great for ear training, and a fast way to learn and understand intervals: the distance in pitch from one note to the next.

Listen to, and play, the first and second notes of a melody, and consider the difference in pitch — the Jaws theme, for example, is a semitone (minor 2nd), “Twinkle, Twinkle” is a perfect 5th, “Hey Jude” a minor 3rd, and so on.

Even if you are not into learning theory, playing melodies on the bass will still teach you a lot about where the notes are on the neck — and it can be a lot of fun, too.

References

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