Hey Product Hunt 👋 I'm Louis, building Lacuna. Most "AI music generators" stop at one prompt → one track. Lacuna treats songwriting as three connected craft surfaces, with two agents that collaborate instead of just generating. **Music agent** — Hum or describe a feeling, the agent composes vocals + arrangement. Conversational; no music theory needed. **Lyrics agent** — A real workspace, not a chatbox. Real-time syllable counter per line so you control rhythm. Automatic end-rhyme detection with color-coded pairs so weak rhymes are visible. AI rhyme suggestions and verse/chorus/bridge templates on demand. The agent thinks with you, it doesn't write for you. **MIDI tools** — Text-to-MIDI, image-to-MIDI, PDF-to-MIDI, sheet music scanner, and an in-browser MIDI editor. For when you want to take an idea into Logic / Ableton / FL. 9 languages. Free tier with monthly credits, no card. Paid plans add commercial license, more credits, priority queue. Treat this as v0 — just starting. Would love brutal feedback, especially from anyone who actually writes songs.

Lacuna

An AI music studio for the songs inside you

An AI music studio for the songs inside you