MIDI keyboard (Q..P + numbers) — WebMIDI + fallback synth
Keys mapping: Q W E R T Y U I O P → C4..E5. Numbers 2 3 5 6 7 9 0 → black keys. Hold a key to sustain; release to stop.
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
F#
G
G#
A
A#
B