Notated orchestra

Everything from Level 3 — add or remove instruments, pick a voice, drag a dot to change its note — plus every panel's own staff, drawn live underneath it. Pull a dot further out and its note gets a longer value, on the page and in your ears.

Click or tap a shape to select it, then use its buttons or the keyboard: numbers 3–9 set its vertex count, ←/→ rotate its phase. Space plays or pauses the whole ensemble. The −/+ instrument buttons remove the newest panel or add the next unused voice from the catalog. Each panel's staff and cursor track its own shape, in its own instrument's colour.