I built a piano that paints — same song, same painting, every time

Hi Product Hunt 👋

I'm Rasto, a solo maker from Slovakia, working under the artist name RafFel. For the past months I've been building Paintiano — an instrument that turns music into paintings.

The twist: there's no AI randomness in the core. Every chord maps to color through a deterministic system built on the circle of fifths and the golden ratio (φ). Play the same song twice, you get the same painting — because the painting is the music, not an interpretation of it. Think of it as a conceptual artwork that happens to be an app.

What it does today:
• Play the piano, sing, or let it listen to a song in the room — it paints live
• Feed it MIDI, audio, sheet music, or a photo
• 18 artist styles (Kandinsky, Rothko, Kusama, Mondrian…), print-ready exports up to A1
• Free tier, no account, no card — just paint

We launch July 28 — the Coming soon page is live if you'd like a nudge on launch day.

But honestly, I'm here for feedback before that: what would you want to hear-and-see painted first? And if you try the free version at paintiano.app — what confused you in the first 60 seconds? That's the gold I need now.

— RafFel