Play What?

Intervals

P1
1:1.00
M2
1:1.12
M3
1:1.26
A4
1:1.41
P5
1:1.50
M6
1:1.68
M7
1:1.89

Roman Numerals

Numeral	I^Δ	II^⁷	iii^-	iv^ø	V^Δ	vi^-	vii^-
Degree	1	2	3	4	5	6	7
Name	Maj 7	Dom 7	Min 7	Half-Dim 7	Maj 7	Min 7	Min 7

Diatonic Modes

Child Chords

Name	Intervals
Major Triad	P1				M3			P5
Major 7th	P1				M3			P5				M7
Major 6th	P1				M3			P5		M6
Suspended 2nd	P1		M2					P5
Major 9	P1		M2		M3			P5				M7
Major 13	P1				M3			P5		M6		M7

Child Scales

Name	Intervals
Major Pentatonic	P1		M2		M3			P5		M6