Lay a pattern by laying eggs. Each drum row is a voice; click a cell to lay an egg — click again for a golden one that leans (the accent). Below the kit, two perch rows sing through SYRINX: drag an egg up or down for pitch (the rails hold the key — a wrong note is unrepresentable), click it away to rest. Right-click any row to lay a lattice — every step, 2, 4, 8, or just the one — or arm a voice in FILL and stack them by touch; lattices ADD, clear row takes them back. Swing pushes the off-sixteenths late; two nests chain A into B; Length stretches the bar to 32 or 64 steps (the window moves, the eggs stay). When it's ready, Bounce renders the whole chain × cycles offline — seam folded, loop-perfect — and the WAV drops straight into CHIRP's Beats. Flip 808 ↔ 909 to recolor a running kit — and remember, nothing here is a sample: every voice is synthesized, deterministic, weightless. Open ?selftest=1 to watch the engine prove its own contracts.