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Delta7

A native workspace that turns musical ideas into editable scores.

In development · Native macOS application
Delta7 — actual application interface
A focused workspace for jazz charts and musical notation.

Where it started.

Musicians need tools that understand their notation and leave space for the music. Delta7 is a native editor for jazz chord charts and staff notation, with a quiet interface, a document library and a focused zen mode.

From idea to implementation.

Built in Rust, the application combines direct editing, multiple documents, undo and automatic saving. MusicXML and MIDI import bring existing material into the editor. Local recognition of printed scores and a reviewable import queue extend that workflow to PDFs and scanned pages.

Software shaped around a specialist workflow.

Chord symbols, sections, measures and staff notation are first-class editing concepts. Native menus, keyboard shortcuts and persistent documents make the application useful beyond a single demonstration.

From an existing score to something editable.

Structured music files import directly. Scanned material follows a local recognition workflow that preserves the original, marks uncertain results and lets the musician review the transcription before relying on it.

Where it stands.

A working macOS application in development, demonstrated locally. Score recognition requires review; handwritten recognition is experimental. A public, notarized distribution is not currently available.