Muse — Demo Hub
Domain-agnostic version control for multidimensional state. Music is the first domain. Code is the second. Genomics, 3D design, and spacetime simulation are next.
Choose a domain to see Muse's full power:
MIDI Demo →
31 semantic porcelain commands — version control that understands music.
Muse treats MIDI as a typed, content-addressed graph of note events. Every note has a stable content ID. Every commit stores a note-level structured delta. Two composers can independently harmonize the same track and merge at the note level — changes to non-overlapping notes never conflict.
| Group | Commands |
|---|---|
| Notation & Visualization | notes · piano-roll · instrumentation |
| Pitch, Harmony & Scale | harmony · scale · contour · tension · cadence |
| Rhythm & Dynamics | rhythm · tempo · density · velocity-profile |
| Structure & Voice Leading | motif · voice-leading · compare |
| History & Attribution | note-log · note-blame · hotspots |
| Multi-Agent Intelligence | agent-map · find-phrase · shard · query |
| Transformation | transpose · invert · retrograde · quantize · humanize · arpeggiate · normalize · mix |
| Invariants & Quality Gates | check |
Plus the core VCS operations with musical semantics:
muse diff shows "C4 added at beat 3.5" · muse merge resolves conflicts
per dimension (melodic / harmonic / dynamic / structural) · muse read
displays note-level changes in musical notation.
Full command reference: MIDI Domain Reference
Code Demo →
12 commands that are strictly impossible in Git.
Muse treats code as a typed, content-addressed graph of named symbols — not a bag of text lines. Every commit stores a symbol-level structured delta. Every function has a stable identity hash that survives renames and moves.
| Command | One-line description |
|---|---|
muse code symbols |
Every function, class, and method in the snapshot — extracted from real ASTs |
muse code grep |
Search the symbol graph by name, kind, or language — no false positives |
muse code query |
Predicate DSL: kind=function language=Go name~=handle hash=a3f2c9 |
muse code languages |
Language + symbol-type breakdown across the whole repo |
muse code blame |
Which commit last touched this exact function? One answer. |
muse code symbol-log |
Full history of one symbol — renames and moves included |
muse code detect-refactor |
Classify semantic operations: rename / move / signature / impl |
muse code hotspots |
Symbol churn leaderboard — which functions change most? |
muse code stable |
Symbol stability leaderboard — your bedrock, safe to build on |
muse code coupling |
File co-change analysis — semantic hidden dependencies |
muse code compare |
Deep semantic diff between any two historical snapshots |
muse code patch |
Surgical per-symbol modification — the agent interface |
Supported languages: Python, TypeScript, JavaScript, Go, Rust, Java, C, C++, C#, Ruby, Kotlin
Shared Architecture
Both domains build on the same engine:
Content-addressed object store ← immutable, SHA-256
Snapshot manifest ← file path → object hash
Structured delta ← typed DomainOp tree (insert / delete / replace / move / patch)
Commit graph ← parent chain with structured deltas on every node
The MIDI plugin adds:
Note event model ← NoteKey (pitch, velocity, start_tick, duration_ticks, channel)
Note-level diffs ← PatchOp with child InsertOp/DeleteOp per note
Dimensional merge ← melodic / rhythmic / harmonic / dynamic / structural
Content IDs per note ← SHA-256 of the five NoteKey fields
The code plugin adds:
AST symbol trees ← SymbolRecord (kind, name, body_hash, signature_id, content_id)
Symbol-level diffs ← PatchOp with child InsertOp/DeleteOp/ReplaceOp per symbol
Rename detection ← body_hash match across addresses
Move detection ← content_id match across files
Every domain command is a consumer of what the plugin already produces. No new storage format. No new protocol. Just queries over the structured commit history.
The Semantic Stack
| Layer | What it stores | Music commands | Code commands |
|---|---|---|---|
| Object store | Raw bytes, SHA-256 | All | All |
| Snapshot manifest | file_path → sha256 |
notes, harmony, piano-roll |
symbols, languages, compare |
| Structured delta | Typed op tree per commit | note-log, note-blame, note-hotspots |
blame, hotspots, stable, coupling |
| Domain graph | Notes / AST symbols | velocity-profile, harmony, query |
grep, query, patch |
| Write layer | Live file modification | transpose, mix |
patch |
Muse v0.1.2 · Python 3.14 · tree-sitter for code · mido for MIDI