How to prepare music for a DJ gig: a step-by-step USB checklist

The checklist at a glance

Most gig disasters aren't about mixing. They're a track that won't load, a file that sounds dull on a big system, a USB the player can't read. All of them are preventable at home.

1. Gather the tracks in one place

Make one folder for the gig and copy everything you might play into it: new downloads, the promoter's requests, and the tracks you always reach for. Working from one folder keeps the next steps simple, and nothing gets left behind on a different drive.

Bring more than you need. A two-hour set usually means about 30–40 tracks played, so aim for two or three times that. The extras let you follow the room instead of a plan.

2. Check file quality

A file that sounds fine on headphones can fall apart on a club system. Check every new track for:

• Fake lossless: a FLAC or WAV converted from an MP3. On the spectrogram, a real file reaches up to about 20 kHz; one made from a 128 kbps MP3 cuts off flat around 16 kHz. See how to check for a fake FLAC.
• Low bitrate: 128 or 192 kbps MP3s get exposed on big speakers. Replace them with a better copy if you can.
• Clipping: tracks mastered so loud the peaks are cut flat. They distort even more once you push the EQ. More in what clipping is.
• Loudness gaps: an older track can be several LUFS quieter than a modern one. Note them so you're ready on the gain. See what LUFS means.
• Broken downloads: scrub through each new file. A cut-off download stops partway through.

An audio quality checker does most of this in seconds instead of track by track.

3. Remove duplicates

Music gathered from several sources always has copies: the same track downloaded twice, one renamed, one with different tags. Duplicates waste space and make you hunt for the right version in the middle of a set.

Keep the highest quality copy, WAV or FLAC over MP3, as long as your gear reads that format. Delete to the Trash rather than permanently, in case you picked wrong. A duplicate finder that compares the audio itself also catches renamed copies. More in how to find duplicate music files.

4. Fix tags and filenames

Many DJ players and programs show the track's tags, not its filename. Empty tags show up as "Unknown artist", and filenames like "track_final (1).mp3" tell you nothing when you're scrolling in the dark.

• Fill in Title and Artist, plus the version: an extended mix and a radio edit are different tools.
• Keep filenames short and plain. Avoid characters like / \ : * ? " < > |, which some systems refuse.
• Use one pattern for everything, for example "8A - 128 - Artist - Title".

Doing this by hand takes hours. A batch tag editor fixes a whole folder at once. See how to rename music files by BPM and key.

5. Analyze BPM, key, and Camelot

Analyze every track before the gig, not on the player. Then scan for problems:

• Half or double BPM: a dubstep track reading 70 or a drum & bass track reading 87 was counted at the wrong speed. See why BPM shows 70 instead of 140.
• Keys in one notation: Camelot codes like 8A make it easy to see what mixes next. See the Camelot wheel.
• Cue points and beat grids: set them in your DJ software for the tracks you know you'll play.

Free BPM, key, and Camelot detection for the whole folder takes minutes, not an evening.

6. Split playlists by part of the set

One giant playlist is hard to navigate under pressure. Split it the way the night unfolds:

1. Warm-up: lower energy, more space, vocals that don't fight the room.
2. Build: tempo and energy climbing.
3. Peak: your strongest tracks.
4. Closing: something to end on, and something for an encore.
5. Backups: crowd pleasers, a different genre in case the room wants it, likely requests, and one long track for when you need a few minutes away from the decks.

Within each list, order by BPM and key so the next track is always nearby. More in how to build a DJ playlist by BPM and key.

7. Back up everything

USB drives fail, get lost, and get left in the player. Bring two drives with identical content and keep them in different pockets. Keep a third copy somewhere else, on a laptop, a phone, or cloud storage, so a lost bag doesn't end the night.

Your gig USB is not a backup of your library. Keep the main library at home, backed up separately.

8. Format the USB drive

Format before you copy, because formatting erases the drive. Which format depends on the gear you'll play on:

• FAT32 is read by almost every DJ player and computer. Its 4 GB per-file limit doesn't matter for music.
• exFAT is read by many newer players, but not by some older ones.
• NTFS and macOS-only formats are often not read by DJ players at all.

Also check the file formats: MP3 and WAV are the safest, AIFF is widely supported, but some older players can't read FLAC or very high sample rates. See MP3 vs FLAC vs WAV. Many players also read USB drives prepared by the DJ software made for that gear, with your cues, grids, and playlists. Plain copied files usually still play, but you may lose cues and the player may have to analyze each track on the spot. When in doubt, ask the venue which gear they have and check its manual.

9. Test before the gig

The day before, plug the USB into the same kind of gear if you can, or at least into a different computer than the one you prepared it on:

• The drive shows up and the playlists are there.
• Tracks load and play to the end.
• Names and artists display correctly, including accented characters.
• Cues and grids are where you set them.

Then charge your headphones, pack an adapter for the mixer, and get there early enough for a sound check.

FAQ

How far ahead should I prepare music for a gig?

Start three to seven days before, so you have time to replace bad files and re-download what's broken. Avoid adding new tracks the night before. If you must, put them in a separate playlist so they don't mess up your sorted lists.

How many tracks should I bring for a two-hour set?

A two-hour set usually means about 30–40 tracks played, depending on genre and how long you let each one run. Bring two or three times that, split into playlists by part of the night, so you can follow the crowd.

What format should a DJ USB drive be?

FAT32 is the safest choice because almost every DJ player and computer reads it. Many newer players also read exFAT. Check the manual of the gear you'll play on, and format the drive before copying music to it.

Should I bring WAV, FLAC, or MP3?

A genuine 320 kbps MP3 sounds fine on most systems. WAV or AIFF gives the most headroom if the gear reads it, and FLAC is worth checking first on older players. The real enemy is a fake high-quality file, so check quality whatever the format.

Faster with Taxonomy DJ

Taxonomy DJ covers most of this checklist on your own computer:

1. Quality: drag the gig folder's files into the Inspector tab. Each file gets a verdict such as Upscaled or Clipping, plus a spectrogram. Free.
2. Duplicates: drag the folder into the Duplicates tab, click Scan for duplicates, then Delete duplicates: choose to keep the highest quality copy, check the preview, and send the rest to the Trash. Free.
3. BPM, key, Camelot, loudness: in the Music Library tab, click Add music folder, choose Analyze waveforms, then Scan. Free, no track limit.
4. Tags and filenames: in the Tags tab, build an action group like Camelot - BPM - Title and preview it on real tracks before saving. Premium.
5. Playlists to USB: in the Playlists tab, click New playlist and right-click tracks ▸ Add to playlist. Then right-click the playlist ▸ Copy to folder and pick your USB drive. Files are copied into one subfolder per label, with tracks that have no label in Unlabeled, and the originals stay where they are. Export M3U file saves the playlist for other DJ software. Free.

See Free and Premium for what's in each plan.

Read next: how to organize your DJ music library and how to build a DJ playlist by BPM and key.