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Project → Revision

Music you can revise.Not just regenerate.

Lyra turns creative direction into targeted musical changes while preserving the decisions you want to keep.

SoundRack v0.35 · Patchbay v0.6

A prompt becomes an instrument, not a disposable recording.

SoundRack owns the playable Patch. Patchbay owns how that exact source enters the Project, routes through the graph, and becomes a reproducible mix.

Real Project case

Dark Stage Tines started as “give me a dark normal piano sound.”

Lyra planned three prompt-grounded candidates. The selected six-operator Native Patch stayed editable: Body darkness, Hammer presence, and Room distance remain temporary audition controls over one shared melody; the website demo does not save a Patch.

  • SemanticPatch keeps musical intent readable
  • EnginePatch keeps executable parameters inspectable
  • Temporary audition stays separate from persisted Patch lineage
  • The hosted MIDI Lab editor keeps the exact Library asset
SubtractiveFM / PMWavetableSampler
The real SoundRack editor for Dark Stage Tines in the rhythmetic boombap Project
Real interface · saved Project sourceDark Stage Tines · canonical ae3c244a154b
01 · SoundRackTimbre · Patch · Native instrument

Creates and revises the sound. It does not write MIDI, Regions, BPM, Arrangement, or MixState.

02 · Exact source bindingAsset ID · revision · hashes

The Project points to the chosen immutable Patch and its renderer evidence.

03 · PatchbayChannel · Bus · Route · Render

Owns canonical MixState, typed graph execution, meters, and offline mix artifacts.

Patchbay Mixer for rhythmetic boombap version 10 with saved SoundRack instruments on Chords, Bass, and Melody
Actual “rhythmetic boombap” v10 Mixer · Dark Stage Tines · Velvet Sub Glide · Wooden Pluck

Same conversation Project · new timbres

Listen to the saved SoundRack sources through the Project mix.

This is the latest offline render with no audition-excluded bindings—not a transient realtime audition bed.

Project
rhythmetic boombap · v10 · 91 BPM
Audio
48 kHz · 24-bit · stereo · 12.36 s
Render
Offline · validation passed
SHA-256
3e5a0f412b7f…
RuntimeVerified

Native engines, browser audition, hosted editor, and Patchbay graph execution are exercised.

ArtifactVerified

Patch revisions, source hashes, MixState identity, and the copied WAV hash remain traceable.

ProviderBounded

Candidate planning is optional and failure-visible; deterministic local semantics remain a development fallback.

Current boundary

Recording, Flex and time stretching, AU/VST hosting, and third-party vendor editors are not part of this release. The current Project route supports exact SoundRack sources and validated offline Patchbay rendering.

Arrange uploaded audio without flattening the source.

Lyra DAW v1.0.0-rc.1 keeps imported WAV and MIDI assets addressable while edits become reversible Project revisions.

Verified runtime case

Two Audio Tracks. Three waveform Regions. Source bytes unchanged.

Regions were edited, undone, and restored after reopen while their original assets remained hash-bound. The Patchbay graph and live meters persisted with the Project.

Runtime verifiedArtifact lineage verifiedUpload-first RC
  • Move across time and compatible Tracks
  • Trim, Slip, Scissors
  • Cut, Copy, Paste, Duplicate
  • Region Gain, Fades, Normalize
  • Undo, Redo, Reopen, Archive, Bounce
RC boundary

This upload-only RC does not yet include recording, Flex or time stretching, or AU/VST hosting.

A first multi-track foundation.

Lyra can now bring Chords, Bass, 808, Drums, and explicit Melody Tracks into one project while keeping each Track available for the next decision.

“Make the bass simpler. Keep everything else.”

ChangedBass

KeptChords, Melody 1, Melody 2, 808, Drums, and Project timing

Explicit Melody Tracks

Add a lead, a counterline, or another independent Melody Track.

Change the movement. Keep the chord.

Lyra can revise one performance dimension while carrying harmony, voicing, and voice leading forward.

“Keep the rhythm, make it tighter, and let the notes come up one by one.”

ChangedPerformance

KeptHarmony, voicing, and voice leading

C majorSoulful electric piano
Cmaj9Am7Dm9G9sus4

Sequential entrances with shorter releases.

Tempo76 BPMUser specified
Tonal contextC majorPreserved
ValidationPassedStructure and constraints

Agent instruction

Move a Harmony Event to an exact bar and beat.

This changes the composition and creates a focused generated version.

Direct Piano Roll edit

Edit individual MIDI notes without another generation.

Move, resize, change velocity, add, or delete one note inside the event.

Give direction where it matters.

Explicit choices win. Open choices may come from the Project or Lyra, and their source remains visible.

Set the musical contextDirect the foundation when it matters, or leave an explicit choice open.

Tempo

Set it, inherit it, or leave it to Lyra

20-300 BPM, source stays visible

Tonal context

Key and Mode follow the same authority rule

Your choice, Project, or Lyra

Harmonic mood

Direct the emotional shape of a progression

Warm, tense, sparse, suspended, dark

Harmonic rhythm

Reshape when each Harmony Event arrives

Exact bars, beats, holds, connectors, blanks
Shape harmony and movementChange the part of the harmonic result that carries the requested feeling.

Chord color

Change extensions without restarting

7ths, 9ths, 11ths, 13ths, suspensions

Voicing

Open, tighten, widen, or change register

Measured spacing and register

Voice leading

Control how voices travel between chords

Common tones and smooth top lines

Performance

Roll, retrigger, offset, shorten, or hold

Per-voice timing, duration, velocity
Keep the result editableThe generated object stays audible, addressable, and available for another decision.

Direct MIDI

Edit the generated result note by note

Pitch, start, length, velocity, add, delete

Versions

Compare, undo, redo, and continue

Every revision remains addressable

Audition

Hear the result before export

Preview sounds and local WAV render

Output

Keep the musical object, not only the audio

MIDI and WAV

Different prompts. Different harmonic decisions.

Listen to how Key, Mode, BPM, and chord color shape four generated loops.

D minor, 87 BPM

Sad boom bap

D minor supports the sad direction. 87 BPM leaves space for a laid-back boom-bap pocket.

Dm9 → B♭maj9 → Gm9 → Dm9 → A7(♭9, ♭13)

C minor, 78 BPM

Urban minor

C minor keeps the requested color dark. 78 BPM gives the passing chords room to register.

Cm7 → A♭maj9 → Fm11 → F♯m7♭5 → D♭maj7

C natural minor, 84 BPM

Warm minor

The request sets C natural minor. Lyra chooses 84 BPM to keep the result warm and unhurried.

Cm9 → Fm9 → G7(♭9) → Am7♭5 → G7(♭9)

B♭ major, 87 BPM

Jazz connectors

B♭ major gives the extended voicings a warm center. 87 BPM keeps the connecting movement clear.

B♭maj9 → Gm9 → F13 → B♭maj9 → Dm9 → G7(♭9, ♭5) → Cm9

Build rhythm from audible layers.

Each style selects a local pattern and matching kit, then keeps the layer structure available for inspection.

143 BPMA classic snare anchor with controlled hat density.

Rendered mix from the selected local Pattern set and matching Drum Kit.

Kick2 hits
Snare2 hits
Hi-hat9 hits
MIDI with named tracksIndependent WAV stemsConflicts reviewed after assembly

What the evidence supports now.

Validated behavior, work in evaluation, and future development are shown separately.

Validated

  • SoundRack v0.35 editable SemanticPatch and EnginePatch paths across subtractive, FM/PM, wavetable, and sampler engines
  • Patchbay v0.6 canonical MixState, typed routing graph, immutable offline render artifacts, and persistent realtime meters
  • Three saved SoundRack instruments bound to one conversation Project and reproduced in a validated offline Patchbay mix
  • Upload-only DAW runtime with two Audio Tracks, three waveform Regions, and unchanged source bytes
  • Region move, cross-track move, trim, slip, scissors, copy, paste, gain, fades, and normalize
  • Project undo, redo, reopen, archive, bounce, and a persistent Patchbay graph with live meters
  • Foundational multi-track projects with Chords, Bass, 808, and Drums
  • Explicit Melody creation, semantic revision, and note-level editing
  • Targeted Track changes that preserve the rest of the Project
  • Targeted single-track Chord revisions
  • Piano Roll editing, compare, undo, and redo
  • Style-scoped Drum assembly with independent stems

In evaluation

  • Cross-device Project reopen and longer browser sessions
  • Realtime playback performance across larger Projects
  • Mix translation across common playback systems
  • Musical quality across controlled generations
  • Drum intent and pattern-choice quality

In development

  • Main Agent product layer across the complete DAW workflow
  • Recording, input monitoring, takes, comping, and automation recording
  • Flex or time-stretch editing and AU/VST hosting
  • Melody integration in default Track sets
  • More performance styles and playing techniques