Beyond the major scale

C major is the white keys, half steps between 3–4 and 7–8. A minor is those same keys with home on A, so a half step shows up right after degree 2. That early half step is the lowered 3rd you used to build a minor chord. The modes kept that list and only moved home.

From here on, notes get added, dropped, or moved. Each block is one kind of edit. Pentatonic and the minor family are the ones a beginner actually uses. The mode tables under them are a map for later, when a jazz chord asks for a scale that is not major or minor.

The minor scale you learned leaves degrees 6 and 7 low. In A minor those notes are F and G. G does not lead up to A the way B led up to C, so the scale sits down instead of pulling home. Harmonic minor raises only the 7th: G becomes G♯. The step from F to G♯ is three half steps, a jump, and that jump is the dramatic sound. Melodic minor raises 6 and 7 together, F♯ and G♯, so the top of the scale climbs more evenly. Classical playing often comes back down on the plain natural minor.

A natural minor A harmonic minor

Scale	Formula	vs natural minor	Feel / use
Natural minor (Aeolian)	1 2 ♭3 4 5 ♭6 ♭7	—	the plain sad scale; pop, rock
Harmonic minor	1 2 ♭3 4 5 ♭6 7	raised 7th	dramatic, exotic; classical, metal, the “Spanish” sound. The big jump from ♭6 to 7 is its signature.
Melodic minor (asc.)	1 2 ♭3 4 5 6 7	raised 6th & 7th	smooth minor with a major-sounding top; jazz & classical. (Classically it descends as natural minor.)

C major has two half steps, E–F and B–C. Drop F and B — degrees 4 and 7 — and both half steps are gone. Left over: C D E G A, the major pentatonic. You can wander on it and almost nothing clashes. Minor pentatonic does the same job for a minor sound. From A minor, drop B and F (degrees 2 and 6) and you have A C D E G, which is also the C major pentatonic started on A. Blues adds one note between 4 and 5, the blue note.

The last three rows are a different idea. Whole-tone, diminished, and chromatic repeat one step size all the way up, so they never settle on a home the way C did. They are useful for tension. They are a poor place to start. C major pentatonic A minor pentatonic

Scale	# notes	Formula	Feel / use
Major pentatonic	5	1 2 3 5 6	open & happy, nothing clashes; folk, country, pop hooks
Minor pentatonic	5	1 ♭3 4 5 ♭7	the #1 soloing scale; rock, blues, pop leads
Blues	6	1 ♭3 4 ♭5 5 ♭7	minor pentatonic + the ♭5 “blue note”; blues, rock, jazz
Whole-tone	6	1 2 3 ♯4 ♯5 ♯6	all whole steps — dreamy, no gravity; Debussy, dream scenes
Diminished (W–H)	8	1 2 ♭3 4 ♭5 ♭6 6 7	alternating whole/half — tense; jazz over dim7, suspense
Chromatic	12	all 12 notes	every half-step; passing tones & tension, never a “home” key

Symmetrical scales (whole-tone, diminished, chromatic) repeat the same interval pattern, so they have no single “home” and sound like they float.

Once melodic minor exists, it has modes the way C major did: same notes, a different home. You do not need these to play ordinary songs. Two names come up in jazz. Lydian dominant is a dominant seventh with a raised 4th. The altered scale is what players use on a G7 when every tension is allowed. Hear them in the lab. The table is the map.

Mode	Degree	Formula	Used over
Melodic minor	1st	1 2 ♭3 4 5 6 7	minor tonic chords
Dorian ♭2	2nd	1 ♭2 ♭3 4 5 6 ♭7	sus♭9
Lydian augmented	3rd	1 2 3 ♯4 ♯5 6 7	maj7♯5
Lydian dominant	4th	1 2 3 ♯4 5 6 ♭7	dominant 7♯11 (jazz/fusion staple)
Mixolydian ♭6	5th	1 2 3 4 5 ♭6 ♭7	dominant 7♭13
Locrian ♮2 (half-dim)	6th	1 2 ♭3 4 ♭5 ♭6 ♭7	m7♭5
Altered (Super-Locrian)	7th	1 ♭2 ♭3 ♭4 ♭5 ♭6 ♭7	altered dominants (7♭9♯9♯11♭13)

Same idea, with harmonic minor as the parent. The one to recognize by ear is Phrygian dominant: start A harmonic minor on its 5th, E, and you get a major chord with a lowered 2nd. That is the Spanish sound. The other rows are the same scale started on the other degrees.

Mode	Degree	Formula	Sound
Harmonic minor	1st	1 2 ♭3 4 5 ♭6 7	dramatic minor
Locrian ♮6	2nd	1 ♭2 ♭3 4 ♭5 6 ♭7	half-diminished color
Ionian ♯5 (augmented major)	3rd	1 2 3 4 ♯5 6 7	maj7♯5
Dorian ♯4 (Ukrainian Dorian)	4th	1 2 ♭3 ♯4 5 6 ♭7	folk / klezmer
Phrygian dominant	5th	1 ♭2 3 4 5 ♭6 ♭7	Spanish, flamenco, metal
Lydian ♯2	6th	1 ♯2 3 ♯4 5 6 7	bright & exotic
Super-Locrian ♭♭7	7th	1 ♭2 ♭3 ♭4 ♭5 ♭6 ♭♭7	very tense (altered/dim)

Further edits of harmonic minor, plus a few five-note scales from other traditions. Come here when you want a place or a mood that major and minor cannot make. The formula shows which degree moved. Several of these are also modes of the scales above.

Scale	Formula	Feel / use
Double harmonic (Byzantine)	1 ♭2 3 4 5 ♭6 7	Middle-Eastern; two big “gapped” steps around the 2nd and 6th
Hungarian minor	1 2 ♭3 ♯4 5 ♭6 7	gypsy / Hungarian, dramatic — harmonic minor with a ♯4
Neapolitan minor	1 ♭2 ♭3 4 5 ♭6 7	classical, brooding — harmonic minor with a ♭2
Hirajoshi (Japanese)	1 2 ♭3 5 ♭6	meditative 5-note scale; koto music, film “East Asia” cues

Pick a family, a scale, and a root. The keyboard lights the notes, and Play scale sounds them one note per beat.

Open the lab