FMTribe by is an OPL3 synth/drum machine/thingie focused on live jamming for DOS.
Developed by munshkr and brought to the browser thanks to js-dos. Checkout fmtribe sources.
F5: Play / pause
F7: Stop after bar (2 times, stop immeadiately)
F9: Tap tempo
F9: Toggle metronome
F10: Toggle "follow cursor"
Left: Move to previous frame
Right: Move to next frame
Up: Move to previous channel
Down: Move to next channel
Del: Clear pattern for current channel
Del: Clear pattern for all channels
Tab: Switch instrument editor for the current channel
M: Toggle "apply step changes to all frames"
P: Toggle "play channel instrument"
Z: Toggle "record steps"
Alt + Number: Mute/unmute channel