add lower octave
add higher octave
remove lowest octave
remove highest octave
octaves
computer keyboard plays from C1 to C3
computer keyboard plays from C2 to C4
computer keyboard plays from C3 to C5
computer keyboard plays from C4 to C6
computer keyboard plays from C5 to C7
computer keyboard plays from C6 to C8
single notes
major chords
minor chords
sustain
advanced
donate
C
3
D
3
E
3
F
3
G
3
A
3
B
3
C
4
D
4
E
4
F
4
G
4
A
4
B
4
C
5
CHORD
RECORD
playback
save
load
popup window
tick the CHORD and RECORD checkboxes on and off
to create chord buttons and playback buttons here