Twenty variables of an orchestral movement, each drawn against 192 bars. Here the clock is free: tempo, metre and silence have lanes of their own. The sketch synth reads every lane and plays a rough orchestra so the form can be heard before a note is written; the panels below turn the drawing into a form plan, a cue sheet and a JSON you can build on.
Drag to draw. Discrete lanes snap to their states. Each column is one 8-bar phrase, lettered like rehearsal marks. The tension lane at the bottom is computed from the others: the line a composer would draw first.
One line per phrase, in the language of a score: tempo and its motion, metre, dynamic, orchestration, texture, harmony, what the line does. This is the road map to compose from.
Short bracketed cues per phrase, built from the changes between phrases.
Every lane per phrase, plus the derived key and chord plan, for scripts that write notation.