Copperline

Polyphonic keyboard

Octave
C4–F5

Scope

Muted

Waveform

Filter

Cutoff1.4 kHz
Resonance0.7
Volume78

Envelope

Attack20 ms
Decay280 ms
Sustain72%
Release400 ms

US keyboard: A S D F G H J K L ; ' are the white keys, W E T Y U O P the black keys. [ ] or the arrows shift octave.

CA
DS
ED
FF
GG
AH
BJ
CK
DL
E;
F'
W
E
T
Y
U
O
P

Sound is off

Nothing plays until you start it. After that, the keys and your computer keyboard both work.