Coro

CORO is a real-time collaborative music engine that turns any audience into a live orchestra. Audience members join a room via QR code, pick a musical role (Drummer, Vibe Setter, Genre DJ, or Instrumentalist), and their collective inputs are synthesized by Google Gemini 2.5 into evolving musical prompts, which Google Lyria then renders as a continuous, never-repeating audio stream. Features include a coordinated "Drop Button" (majority vote triggers a bass drop), a microphone-powered Applause Meter that dynamically shapes the music's energy, and a real-time Musical Timeline showing the crowd's influence on the evolving composition. Built with FastAPI, React, and WebSockets for sub-second latency across up to 10 simultaneous participants.