Folio

I’m an undergraduate in computer science and music, and I’ve played classical piano for over ten years. All my scores live as PDFs in GoodNotes on an iPad. A scanned score there is only a picture: the app has no idea which bar, which part or which page it is looking at. Folio is an AI librarian for musicians, built on one idea: the piece of music is the identity, not the file. A scan and a digital score are the same piece. So the librarian can split a symphony score into parts and send each to the right stand in the orchestra, find bar 37 in a scan and put a marking on it, or convert the scan into a digital score for practice, all from the same book. Think of it as a Google Docs for an ensemble, with a librarian who can read music. Conversion, part splitting and bar reading run as an agentic loop on Muse Spark 1.3; rehearsal instructions are spoken and land on the right stands through Muse Voice Transcribe and Spark.