Key
Scales in C
Major
C Major
Minor
C Natural Minor
C Harmonic Minor
C Melodic Minor
Pentatonic
C Major Pentatonic
C Minor Pentatonic
Key
Chords on C
C majorC E G
C minorC E♭ G
C diminishedC E♭ G♭
C augmentedC E G♯
Intervals
What each interval does
The tritone
Chords
How chords are built from a scale
Scale pages
- Hear itEvery scale played, in the key you chose.
Theory pages
- Reading roman numeralsChords named by where they sit in a key.
- Chord substitutionKeep most of a chord and change one thing.
- Harmonising a melodyChoosing the chords to put under a tune.
Modes
- IonianMajor by another name.
- DorianMinor with a lift. Jazz and funk.
- PhrygianThat flat 2nd. Dark, Spanish, heavy.
- LydianA sharpened 4th. Floating, cinematic.
- MixolydianMajor with a flat 7th. Loose and bluesy.
- AeolianNatural minor by another name.
- LocrianUnstable by design. Rarely home, often useful.
Other
- BluesPentatonic with one note smuggled in.
- Phrygian DominantHarmonic minor's fifth mode. Desert heat.
- Whole ToneSix equal steps. No gravity.

Chords in A

Every chord built on A. The ones with a page are linked.