Playlists your way, with BPM, key, and Camelot built in to pick what's next.
Group tracks into playlists your way, drag to reorder, with BPM, key, and Camelot on every track.
The problem it solves
The problem
Picking the next track for a set or a nonstop mix means knowing every track's key and BPM, and downloaded tags are often missing or wrong. Typing them in, guessing, and ordering by hand takes an evening.
With Taxonomy DJ
Prep a set or a nonstop mix faster: see right away which tracks match in key and BPM to pick what's next.
What's inside
Drag-and-drop playlists
Make as many as you like. Drop a folder in and you get a playlist named after it; drag rows to reorder.
Add from any tab
Right-click tracks in the Music Library or Training tab ▸ Add to playlist.
Play it your way
Shuffle without repeats until every track has played, and Repeat when the list ends.
Free BPM, key, and Camelot
For your whole library, over 100 tracks a minute, no track limit. Camelot codes are colored around the Camelot wheel.
Pick what mixes next
Right-click a track ▸ Filter harmonic matches or Filter BPM ±3 to see what fits right away.
Take it to other software
Export a playlist as an M3U file to open it in DJ software or another player.
How it works
- 01
A playlist points to tracks in the app: adding, removing, or reordering never touches the music files on disk.
- 02
Analyze waveforms gives every track BPM, key, Camelot, and loudness, for free.
- 03
Filter harmonic matches uses the Camelot wheel: it shows tracks with the same code, one step away with the same letter, or the same number with the other letter.
How to use it
- 1
In the Music Library tab, click Add music folder, choose Analyze waveforms, and click Scan: every track gets BPM, key, and Camelot.
- 2
In the Playlists tab, click New playlist, then right-click tracks ▸ Add to playlist.
- 3
Drag rows to reorder and double-click to play.
- 4
Find the next track: right-click a track ▸ Filter harmonic matches.
At a glance
- BPM and key
- Over 100 tracks per minute, depending on your computer
- Results
- BPM, key, Camelot, loudness (LUFS), waveform
- Export
- M3U file
- Price
- Free on every plan
FAQ
What is Camelot?
A way to write keys as a number and a letter, like 8A or 11B. Tracks with the same number, or one step apart, usually mix harmonically. No music theory needed.
How is Analyze waveforms different from full analysis?
Analyze waveforms only gets BPM, key, and loudness, so it runs about 2.5 times faster. Full analysis adds what is needed for automatic labeling, about 100 tracks per minute. Speed depends on your computer.
Does it cost anything?
No. Playlists, BPM, key, and Camelot are free on every plan, with no track limit. Writing key and BPM to tags needs Premium.
Can I open a playlist in other DJ software?
Yes. Right-click the playlist ▸ Export M3U file, then open that file in the DJ software or player you use.
Further reading
BPM of music genres: what tempo is house, techno, drum and bass?
House usually runs around 118–128 BPM, techno 125–140, trance 132–140, dubstep about 140, drum and bass 165–178, and Vinahouse 130–145. These are typical ranges, not rules: genre tempos overlap, and the same track can read as half or double its real BPM.
BPM & keyHow to prepare music for a DJ gig: a step-by-step USB checklist
Start three to seven days out, not the night before. Gather the tracks, check every file's quality, clear duplicates, fix tags and filenames, analyze BPM and key, split playlists by part of the set, then copy to two USB drives and test one before you leave.
BPM & keyWhy does my BPM show 70 instead of 140? Half-time and double-time explained
Your software isn't broken. It counted the beat at half or double speed, and for many grooves both numbers are technically right. Pick one convention per genre, set your BPM range to match, and most of the wrong readings go away.
BPM & keyWhy does key detection give different results in different software?
Every key detector makes an educated guess from the notes it hears, and each one listens a little differently. Most disagreements are between related keys that still mix fine. The ones that matter are rare, and you can settle them by ear in about a minute.
BPM & keyA Mixed In Key alternative: free BPM, key, and Camelot on Mac and Windows
Want to replace Mixed In Key on Mac or Windows when all you need is BPM, key, Camelot codes, and a quick way to pick the next track? Taxonomy DJ detects all three for your whole library for free, with no track limit. If you rely on automatic cue points or energy ratings, Mixed In Key is still worth keeping.
BPM & keyHow to build a DJ playlist by BPM and key for smooth mixing
Detect BPM and key for every track, pick an opener, then choose each next track within a few BPM and a harmonic step on the Camelot wheel. Lay those steps along an energy curve and you have a playlist that mixes smoothly from start to finish.
BPM & keyWhat is the Camelot wheel? Harmonic mixing for DJs
Camelot writes musical keys as a number and a letter, like 8A or 11B. Learn three simple moves and you can mix in key, no music theory needed.
BPM & keyHow to find the BPM of a song, fast and accurately
BPM is the number of beats in a minute. Tapping along works for one track. For a whole library, you need software that detects it for you, and a quick ear check for the tricky ones.
BPM & keyHow to find the key of a song for DJing
The key is the home note and scale of a track. Know it and two tracks won't clash when they overlap. By ear it takes practice, with software it takes seconds.
More features
Automatic music classification
PremiumLearns how you organize music from a few example folders, then gives every new track one of your labels.
Learn moreMusic player and EQ
FreePlay music with a color waveform and a studio-style EQ, and skip the long intros and outros automatically.
Learn moreSpectrum and visuals
Free · all styles with PremiumA spectrum that jumps with every kick, 80 visuals driven by the music, or your own photos and videos.
Learn moreBatch tag editor
PremiumFix tags, cover art, and filenames for a whole folder with drag and drop, no syntax to type.
Learn moreDuplicate cleanup
FreeFinds every track you have more than one copy of, renamed ones included, then deletes the extras and keeps the best.
Learn moreAudio quality checks
FreeDrop files in to see the spectrogram, waveform, and a verdict: genuine or upscaled, clipping or clean.
Learn morePlay it loud. Watch it move. Keep every crate in order.
Playback with EQ, spectrum and visuals, BPM and key, duplicate cleanup, file checks: download Taxonomy DJ and start free. Upgrade to Premium to have it classify your whole library your way and batch edit tags.