If on PC: Use keys: z1, z2, x1, x2, c1, c2, v1, v2, b1, b2, n1, and n2. Use buttons: 6, 7, 8, 9, and 0. Use the slider to change the pitch effect for the buttons. If on mobile: tap any key or button to play a sound.
v0.1: initial release (mobile only). v0.2: PC support v0.3: fixed PC keys. v0.4: small piano keys v0.5: more piano keys (was 8, now 10.) v0.6: added Elec buttons. v0.7: more Elec buttons v0.8: more piano keys (was 10, now 12.) v0.9: fixed pitch effect for buttons v1.0: fixed piano and fixed buttons v1.1: keys on how to play the piano (if keys are colored, you can use them, but if keys are uncolored, you can't use them.)
