Managing & analyzing DJ tracks

A tidy, well-analyzed library is what lets you find the right record in seconds. Here's how DJs manage and analyze their tracks, which tools handle which job, and how to know the story behind every song you play.

The four jobs of a DJ library

"Managing and analyzing tracks" covers four different jobs. Most DJs use more than one tool, because each one is good at a different part:

1. Organizing your library

• Keep one master music folder and import from there, so your DJ software always knows where files live.
• Use crates or playlists by purpose: genre, energy, era, or "openers" and "peak time", not just by date downloaded.
• Find duplicates and missing files before a gig. Serato and VirtualDJ can flag missing files, and dedicated library managers can find duplicates and sync crates between different DJ apps.
• Back up both the music and your DJ software's library data. In Serato DJ Pro 4 the library and history live in a database in your Mac's Library folder as well as the _Serato_ folder.

2. Analyzing the audio

When you import tracks, Serato DJ and VirtualDJ analyze them for BPM, key and waveforms. Run analysis on new music before the gig, not during it, so the decks are ready the moment you load a track.

DJs who mix harmonically often add a dedicated key-detection tool, which writes key and energy information into the file tags so every DJ app can read it.

3. Cleaning up tags

Good tags make everything else work: search, sorting, your stream overlay and song lookups. A few habits help:

• Put the artist and title in their own fields, not both in the title.
• Keep remix or version names in the title in brackets, for example (Extended Mix).
• Remove download-site junk such as website names and "www" from titles and comments.
• Add artwork. It shows in your DJ software and on stream overlays.

4. Knowing the music you play

The first three jobs help you find and mix a track. The fourth is about the music itself: what you played, and what's worth saying about it. This matters most for radio and streaming DJs, whose audience hears every word between songs.

Track-Details handles this part. It runs alongside Serato DJ or VirtualDJ on your Mac and, as each track plays, it:

• Shows the song's details: writers, producers, original release date, label, chart peaks, and the films and TV shows that used it, plus the song's story from Wikipedia.
• Keeps a record of your set: a dated setlist of every track, saved automatically, plus nowplaying.txt and JSON files for your own tools.
• Puts the current track on your stream through an OBS overlay, so your audience always knows what's playing.

It reads the play history your DJ software already keeps, so there's nothing to set up in Serato or VirtualDJ, and it never changes your library. Clean tags give it better results, which is one more reason to keep them tidy.

A simple routine

1. New music in: clean the tags, add artwork, drop it into your master folder.
2. Analyze: run BPM and key analysis in your DJ software, or your key tool first.
3. Organize: add the tracks to the right crates or playlists.
4. Play: let Track-Details show each song's details and log your set while you mix.
5. After the show: use the saved setlist for your tracklist, show notes or archive.

Questions DJs ask