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M4A DJ STUDIO · MAC APP · 0.7.2

Get to know
your music.

Listen. Organise. Find the words.

Keep your favourite takes, lyrics and notes together. Explore estimated tempo, key, genre and mood, build smart playlists, and transcribe English recordings on your own Mac.

For the folder called “final_final_actually_final”. We’ve all been there.

Local audio processing · MP3, M4A & WAV · English transcription included

Evaluation build — signed public download coming soon

Version 0.7.2 is an evaluation build. The app is ad-hoc signed; its installer is unsigned and not notarised. No installer is offered here while signing, device testing and release review remain incomplete.

M4A DJ Studio library showing fictional tracks, ratings, musical details and playback controls
Native app view with fictional demonstration tracks and values. Not evidence of analysis accuracy. Select the image for full size.

A place for the good takes.

A library that remembers

Import individual recordings or folders. Keep ratings, favourites, play counts, original lyrics, style notes and Suno links alongside your tracks. Search saved words and details to find that idea you nearly forgot.

Musical perspective

Estimate BPM and key; see suggestions for genre, mood and vocals. Correct results with editable fields and tap tempo. Saved corrections survive reanalysis.

Estimates, not verdicts: tags use short excerpts and a limited vocabulary. Energy measures relative recording level; danceability estimates beat regularity. Neither is mastering advice.

The next track, faster

Combine filters and save smart playlists that follow their rules as your library changes. Analyse All includes tracks hidden by filters. Stop when you need to; completed results stay saved.

Find the words locally

The bundled Whisper Base English model creates editable transcripts without an account, API key or audio upload. Copy the text or export it.

Speech works best. Singing and background music can cause missing or invented words. Always review the result. The app may be confident; your ears still get the final vote.

Analysis panel with estimated tempo, key and musical tags, plus editable corrections
Native app view with fictional demonstration tracks and values. Not evidence of analysis accuracy. Select the image for full size.

One focused job.

This is a music library and analysis app. It does not record microphones, mix, master, generate music, separate stems or provide live DJ decks. Your original recordings stay where you put them; library removal keeps the audio file.

Which Macs?

The build targets macOS 12 or later and includes Intel and Apple Silicon code. The supplied runtime evidence covers Intel macOS 15.8.1 only. Apple Silicon, older supported macOS versions and clean-machine installation are still awaiting tests.

How private is local?

The reviewed app has no audio-upload or telemetry feature. Library data is readable JSON on your Mac. Cloud-synced folders, exported files, website visits and Suno links have separate privacy implications.

Read where your data goes →

Start with the guide

Import, playback, analysis, transcription, corrections, exports, backup and troubleshooting—all in one place.

Read the complete user guide →

What happens next?

Public downloads will follow signing and notarisation, device testing and final release decisions. Pricing, distribution licence and app support arrangements are not yet final.

See the release status →