The Music OS with a brain.

Every track, stem, lyric and idea in one place, with an AI that organises, credits and connects it all for you. From the first voice note to the final master.

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Powered by Kii

Meet Kii, the bit that does the boring jobs.

Kii isn't a chatbot bolted on the side. It runs through your whole catalogue, so the admin that normally eats your week just gets handled.

Sorts your files into songs

Drop in a messy folder of bounces and Kii sorts them into songs, versions and stems. Named, tagged and credited.

Answers anything about your catalogue

Ask it 'what have I got around 120 in a minor key' or 'have I written this line before'. You get a straight answer.

Keeps your credits straight

It learns who you work with, fills in missing credits and splits, and catches duplicates before they pile up.

Writes with you

Co-Writer sits in the lyric editor. Brainstorm titles, tighten lines, check the rhyme and meter without leaving the song.

What Kii suggests, you approve. It never changes your catalogue behind your back. And if it can't do something, it says so.

Track organisation view with inspector panel

Every part of the song. In one place.

Locker is where your music stays organised. Tracks, versions, stems, lyrics, files, notes, and collaborators stay connected in one searchable workspace.

  • Unified music workspace
  • Version history and A/B comparison
  • Metadata and tagging built for music catalogues
  • Lightning-fast search across your catalogue
Learn more
AI assistant searching and creating playlists

Collaboration happens where the music lives.

Comments, feedback, approvals, and shared context stay attached to the track instead of disappearing across email threads, messages, or download links.

  • Comments and approvals linked to the track
  • Smart share links
  • Activity and change tracking
  • Context-aware notes and messaging
Learn more
Playlist management view

Your music, automatically organised.

Locker understands music workflows. Upload a stem pack or a full session and Locker groups related files, detects stems, and keeps versions linked behind the scenes.

  • Import from Google Drive, Dropbox, and more
  • Automatic stem detection
  • Batch uploads
  • Version-linked stems
Learn more

The OS for every role in music.

From the first idea to final delivery, Locker supports writing, producing, organising, and releasing music in one connected system.

Artists & Songwriters

Capture ideas, versions, lyrics, and demos in one evolving workspace.

Producers

Manage stems, versions, notes, deliveries, and client feedback effortlessly.

Labels & A&R

Create searchable catalogues and track your roster with clarity.

Publishers

Keep song assets, splits, metadata, and rights notes organised.

Managers

Streamline releases, sessions, and communication across your roster.

"Love it! What a game-changing tool. Everything's easier to find, quicker to manage, finally everything lives in one place."

Phil Cook

Songwriter and Producer·Lewis Capaldi, Ellie Goulding, Liam Payne

Now on Mac

Locker for Mac

Locker, native on your Mac. It watches your session folders, catches the mixes you download, and lets you drag tracks straight in and out of Finder, all in sync with the web.

Download for Mac

Ready to organise your music?

Bring your tracks, versions, stems, and collaborators into one place.

The Music OS for every creator