♪
Nocturne
Scales
Chords
Practice
Ear
MIDI
← All chords
Chord
A
add9
Add 9
▶ Play chord
Arpeggio
A
E
B
C#
Notes
A
C#
E
B
Intervals
0
— Unison
4
— Major 3rd
7
— Perfect 5th
14
— Major 2nd
Formula
R +4 +7 +14
Category: extended