Connect to send notes to the MC-707 over USB. Works in Chrome and Edge.

Each track sends on its own MIDI channel (set in the track header). Match them to the receive channels of tracks 1–8 on your MC-707. For clock, set the MC-707 sync mode to follow external MIDI clock.

Space starts and stops. Keys 1-8 and Q-I trigger the 16 pads (two rows of 8, as on the MC-707). Scene pads, fills, swaps and mutes all wait for the launch point you choose. The key octave changes the key of all tone parts; the mute octave mutes parts.

Select a clip, press Rec in the editor and play. With a MIDI input chosen, pads and keys are recorded. Without one, use the computer keyboard: A S D F G H J K L are notes (W E T Y U O P are sharps; Z and X change octave). On drum patterns the keys A S D F G H J K L Q W E trigger the lanes. Live mode loops and overdubs; Step mode adds one note at a time (Space adds a rest). Esc stops.

Almost everything has a right-click menu: clips, lanes, the ruler, track headers, library patterns, the editor grid, note rows and the velocity lane. In the editor, right-click an empty tone cell to stamp a chord, or a row to fill it or make a Euclidean rhythm.