Jazz Piano Scales for Improvisation (Major, Minor, Dominant & Diminished Guide)

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Julian Bradley

Jazz Tutorial

If you want to play improvised solos in jazz, you need to know which scales to play from.

In this article I’ll show you the different scales you can play for each type of 7th chord.

But first – if you want to learn jazz piano properly from the ground up — without missing key steps — start here.

Major 7 Scales

The major 7 chord is built from the major scale’s root, 3rd, 5th, and 7th. That means it has a root, a major 3rd (E), 5th (G), and a major 7th (B).

This means that any scales you play need to agree on these four notes (‘the chord tones’) - otherwise your scale will clash.

Scales you can play over C major 7:

• C major scale - C D E F G A B - however most jazz musicians consider the 4th (F) to be an ‘avoid note’ - since it sounds slightly dissonant when played over the E below. It’s quite common for improvisers to skip over the 4th in their lines, although you can still play it.

• C lydian scale - C D E F# G A B. This is my ‘go-to’ scale for major 7 chords. The lydian scale is a major scale with a #4 - and this time, the sharp 4th is not an avoid note - F# does not clash with the chord below. The sharp 4th also adds an interesting tonal color to your playing (which means it sounds interesting and sophisticated).

• C major blues scale - C D Eb E G A. You can also play the blues scale over major 7 chords, which is basically a major pentatonic scale (C D E G A) but with the addition of the ‘blue note’ (Eb). Usually the blue note is used as a grace note, to briefly precede the 2nd or 3rd (D or E). It’s fairly uncommon to hear a pianist land on the blue note and sustain it for any length of time.

All of the above scales ‘work’ over C major 7 because they fit with the chord’s root, 3rd, 5th, and 7th - C E G B.

The major 7 scales above can also be played over a C major 6 chord (C E G A) - which is practically the same chord, it just has a 6th instead of the 7th.

Minor 7 Scales

The minor 7 chord is built from minor scale’s root, 3rd, 5th, and 7th. That means it has a root, a minor 3rd (Eb), 5th (G), and a minor 7th (Bb).

Any scale you play over a minor 7 chord needs to agree on these four chord tones - otherwise your scale will clash.

Scales you can play over C minor 7:

• C natural minor scale - C D Eb F G Ab Bb - however most jazz musicians consider the 6th (Ab) to be an ‘avoid note’ - since it sounds a bit dark and lifeless.

• C dorian scale - C D Eb F G A Bb. This is my ‘go-to’ scale for minor 7 chords. I like the dorian scale because it doesn’t have any avoid notes, and the major 6th (A) sounds more optimistic than a minor 6th (Ab) in your solos. The major 6th is more inline with the sound of jazz, and for that reason, most jazz musicians play the dorian scale over minor 7 chords.

• C minor blues scale - C Eb F Gb G Bb. You can also play the blues scale over minor 7 chords, which is basically a minor pentatonic scale (C Eb F G Bb) but with the addition of the ‘blue note’ (Gb). Again, the blue note is normally used as a grace note, to briefly precede the 4th or 5th (F or G).

All of the above scales sound good over C minor 7 because they fit with the chord’s root, 3rd, 5th, and 7th - C Eb G Bb.

Want to download my top improvisation lines for jazz piano? I’ve put together some free sheet music that notates my favorite lines for a ii-V-I.
Click hereto download the Jazz Tutorial Improvisation Cheat Sheet (free).

Dominant 7 Scales

Dominant 7 chords have the most options when it comes to jazz scales, and jazz musicians will play lots of altered notes over V7 chords - like the b9, #9, #11, b13.

The dominant 7 chord (written ‘V7’) is built from the 5th note of the major scale (so G7 is built from the notes of C major scale). That means it has a root, major 3rd (E), 5th (G), and minor 7th (Bb).

Any scale you play over a V7 chord needs to agree on these four chord tones - otherwise it will clash with the chord.

Scales you can play over C7:

• C mixolydian scale - C D E F G A Bb - however this scale is a bit basic, it doesn’t have any altered notes so most jazz musicians will play more exotic scales.

• C lydian-dominant scale - C D E F# G A Bb. This is my ‘go-to’ scale for V7 chords, but only when it’s in the context of a major ii-V-I (most ii-V-Is in jazz are the major ii-V-I, so this is usually the scale I play). In the context of a minor ii-V-I I would play the altered scale, or diminished scale instead. The lydian-dominant scale is the mixolydian scale with a #4 (F#). The #4 (or #11) adds a very classy color to your solos, and I like to aim for this note when playing over a V7 chord.

• C altered scale - C Eb Eb E Gb Ab Bb. The most complex scale there could be, in that it contains every altered extension possible (9 11 13). It has a b9, #9, #11, and b13 (Db, Eb, F#, Ab). - as well as the natural root, 3rd and 7th that are needed to function as a V7 chord. The simple way to remember the altered scale is as the melodic minor scale built from the flat 2nd (Db). So over C7, you would play Db melodic minor scale.

IMAGE - altered scale lick in action over Dø - G7 - Cm7

• C diminished scale - C Db Eb E F# G A Bb.

IMAGE - diminished scale lick in action over Dø - G7 - Cm7

• Hybrid blues scale - C D Eb E F# G A Bb.

IMAGE - C hybrid blues scale over C7

All of the above scales ‘work’ over C7 because they fit with the chord’s root, 3rd, 5th, and 7th - C E G Bb.

Half-Diminished Scales

The half-diminished chord (written ‘Cø’, or ‘C min 7 b5’) is a minor 7 chord with a flat 5.

Scales you can play over Cø (C Eb Gb Bb):

• C locrian scale - C Db Eb F Gb Ab Bb

• C half-diminished scale - C D Eb F Gb Ab Bb

TIP: If you find half-diminished chords intimidating - you can simplify the scale you use and just play from the four chord tones (C, Eb, Gb, Bb).

Diminished 7 Scales

The diminished 7 chord (written ‘Co7’) is a stack of minor 3rds.

Scales you can play over Co7 (C Eb Gb A):

• C diminished scale (whole-step / half-step) - C D Eb F Gb Ab A B

IMAGE - diminished scale over C dim 7 - C D Eb F Gb Ab A B

Minor-major 7 Scales

The minor-major 7 chord (written ‘C-Δ’) is a minor chord with a major 7.

Scales you can play over C min Δ (C Eb G B):

• C melodic minor scale - C D Eb F G A B

Want to actually sound like you're improvising — not just running scales?

Watch my step-by-step improvisation lesson where I break down exactly how to build jazz lines that sound musical over a ii–V–I progression.

→ Watch the full improvisation lesson here

Practice Tip

Choose a Jazz song from your Fake Book.

Play through the song's chords – each chord played simply in your left hand (1-3-5-7).

Then in your right hand, play the appropriate scale – ascending (all the way up) and descending (all the way back down).

Recommended songs:

• Misty
• Satin Doll
• Girl From Ipanema
• Autumn Leaves

I’m Julian Bradley, founder of Jazz Tutorial.

What you get here is one clear teaching philosophy — not a mix of conflicting approaches.

Simple. Structured. No confusion.