Finalverse Song
A score stops being a file you download.
It becomes music you can ask questions.
Song Web is the hub for the AI era of music. Every score here is a live musical object — addressable down to the bar, searchable by what the music actually does, and open to people and AI agents on the same terms.
Easy to make
Type a chord progression and get a score — voicings, voice leading, bass motion and a melody, engraved and playable in about a millisecond. It runs in your browser, so there is no account, no upload, and no cost per idea.
None of that is a model. Voicing and voice leading have correct answers, so they run as arithmetic — instant, free, and the same every time. The model is reserved for the questions with no closed form.
Instant understanding
Drop any MusicXML or MIDI file. Key, meter, form, instrumentation, range, harmony and difficulty come back in about a millisecond — computed by the Song engine running as WebAssembly in your browser. No account, no upload, works offline.
Drop a score to understand it
MusicXML, compressed MusicXML (.mxl), or MIDI — click to choose a file
Analysis runs in your browser. Nothing is uploaded.
Built on three commitments
The score is an API
Every note has a stable, addressable identity. Deep-link to bar 47 of the alto part. Anchor a comment to a melisma. Ask an agent about the second ending — and have it know what you mean.
Intelligence runs where you are
One Rust engine compiles to native for the server and WebAssembly for your browser. The two cannot disagree about what key a piece is in, because there is one implementation.
Agents are first-class
An MCP server and a published capability manifest, with the same primitives people get — under clear rights and real attribution. Agents propose; humans publish.
Searchable by what the music does
Because the hub parses the notes, you can ask for an SATB piece in a minor key that never takes the basses below G2 — and get an answer.
Ode to Joy
Ludwig van Beethoven
C major · 4/4 · 108 bpm · 4 measures · monophonic · solo melody · beginner difficulty
Mo Li Hua
Traditional (Chinese folk song)
E minor · 4/4 · 72 bpm · 3 measures · monophonic · solo voice · with lyrics · beginner difficulty
Greensleeves
Traditional (English)
A minor · 6/8 · 84 bpm · 3 measures · monophonic · solo voice · with lyrics · beginner difficulty
The hub publishes. The Studio composes.
Finalverse Song Studio is the desktop workspace where a musical idea becomes a living score — professional engraving, playback, parts, and a provider-neutral AI assistant that proposes changes you preview before applying. It is open source, and it is built on the MuseScore Studio notation engine.