For macOS · Apple Silicon

Read your crate
the way a DJ does

Selectah measures the tempo, key, energy and genre of every file in a folder, shows you which tracks mix together, and lays out exactly how it would sort them — before it touches a single file.

117 records read
5A→6A adjacent (+1) · same energy
6A

It reads the record, not the filename

When a file already carries a tempo and key from Rekordbox, Serato or Mixed In Key, Selectah believes them. When it does not, it listens to the audio and works them out.

Mixes with

What goes into what

Pick a track and Selectah ranks the rest of the crate against it, on the wheel and on tempo, and tells you why each one works: same key, wheel neighbour, relative major, the energy boost. Click any of them to hear it.

Camelot wheel

The whole wheel, at a glance

Every key in your crate, sized by how much of it you have. Tap a segment to keep only those records. The tempo histogram and the genre families narrow the same way.

6A→6B relative major · lifts the room
6B

Nothing is written until you say so

Eleven ways to lay out a crate — by genre, tempo, key, energy, year, artist. Each shows the folders it would make and what would land in them.

Preview

See the plan before it happens

The preview is the whole arrangement, folder by folder, down to the last track. Close it and nothing has changed on disk.

Mixable sets

Sets that actually chain

Selectah walks the crate looking for runs where each record leads into the next, showing the tempo and key move at every step. Anything that will not chain is set aside rather than buried mid-set.

6B→9B energy boost (+3)
9B

It will not lose your music

Four things Selectah guarantees, whatever you ask it to do.

Links by default

Every file stays where it is

The default arrangement makes links. They take no disk space and move nothing. Copy and move are there when you want them.

Undo

Including the moves

Every run is written down. One button puts the files back where they were and removes the folders it made.

No overwrites

It renames instead

When two tracks would land on the same name, Selectah renames rather than replace. Nothing is deleted, ever.

Offline

Stays on your Mac

No account, no upload, no analytics, no licence server. Selectah makes no outbound network connection at all.

9B→10A diagonal · settles it down
10A

What it needs, and what it reads

Mac
Apple Silicon (M1 or later), macOS 12 Monterey or newer.
Formats
mp3, m4a, aac, alac, wav, aiff and flac — everything CoreAudio reads.
Tags it trusts
Tempo and key written by Rekordbox, Serato, Mixed In Key, Traktor or Beatport are used as they are, which makes a re-scan of a tagged crate take seconds.
Exports
Folders of links, copies or moved files, with an .m3u8 playlist per folder carrying the tempo and key of each track.
Privacy
Nothing leaves the machine. Read the policy.
1A

Coming to the Mac App Store

One purchase, no subscription, no account. The download button will be right here once it is through review.