Harmonic sets, prepped in minutes.
BlendKey reads the BPM and key of every track, drops five cue points on the beat grid, orders your playlist so each blend sits in key, and sends it all to Rekordbox, ready for your USB.
Free to try · Windows and Mac · Works offline
Tap a key. The keys that mix with it light up, just like in the app.
The boring part of set prep, done for you.
Import a folder, check the results, export. Everything you'd normally set by hand in Rekordbox is already there.
Reads every track
Key and tempo detection from a published music-analysis library, rounded the way DJ software shows it (130.00, not 129.9). Fix any read in two clicks.
Shows what blends
Select a track and every compatible key lights up. Switch between number codes like 8A and real key names like Am.
Cue points on the grid
Intro on the first beat, first drop, breakdown, second drop, and an outro 32 bars from the end. Drag any of them and they snap to the beat.
Orders your set
Build a playlist from low to high energy, high to low, or shuffled, with neighbouring tracks kept in compatible keys.
One file per mix
Add a label like "Club Mix" to every file in a playlist, on disk, so each set keeps its own cues. One click puts the old names back.
Straight to Rekordbox
An XML with keys, BPM, beat grid, color-coded hot cues and your playlists in the exact order you arranged them.
Folder in, Rekordbox playlist out.
Import
Pick a folder or drag it onto BlendKey. Your library stays loaded the next time you open the app.
Check
Glance down the key and BPM columns and the cue points on each waveform. Correct anything that's off; BlendKey keeps your fixes.
Arrange
Drop tracks into a playlist and let Auto order them, or order them yourself using the key wheel.
Export
Save the Rekordbox XML. BlendKey already knows where every file lives, so there's no folder path to type.
Import in Rekordbox
Point Rekordbox at the XML in Preferences, right-click your playlist, choose Import, then sync to USB as usual.
Try it on your own music first.
Download the free version and check the keys, BPM and cue points on tracks you know. Upgrade when you're ready to export to Rekordbox.
- BPM and key detection
- Key Wheel and Auto playlist ordering
- Five beat-grid cue points per track
- Unlimited tracks and playlists
Windows and Mac. Upgrade inside the app any time with a license key; there's nothing to reinstall.
- Everything in Free
- Export to Rekordbox with keys, BPM, beat grid, hot cues and playlist order
- Rename files per mix, with one-click revert
- Use it on 2 computers
Your license key arrives by email straight after checkout. Checkout and payment are handled by Lemon Squeezy, our reseller and merchant of record. Taxes are calculated at checkout.
Requirements
- Windows
- Windows 10 or 11, 64-bit
- Mac
- Apple Silicon (M1 and newer) or Intel
- Rekordbox
- Any version with rekordbox xml import
- Files
- MP3, WAV, AIFF, FLAC, M4A, OGG
- Internet
- Needed to activate a Pro key; then offline for up to 30 days at a time
BlendKey is an independent product. Rekordbox is a trademark of AlphaTheta Corporation; BlendKey isn't affiliated with or endorsed by AlphaTheta.
Questions DJs ask
How accurate is the key and BPM detection?
It uses a published, well-tested music-analysis library and matches DJ software on most dance tracks. No detector is perfect, so every key, BPM and cue point can be corrected by hand, and BlendKey remembers your corrections.
Does it change my music files?
Only if you use Rename, which adds a label to the file names in a playlist. The audio itself is never touched, and Revert restores the original names.
How do I move BlendKey to a new computer?
Open BlendKey on the old computer, click BlendKey Pro, then Deactivate this computer. Then activate the same key on the new one. Each key works on 2 computers at once.
Do I need internet to DJ?
No. You need a connection to activate your key. After that BlendKey checks in now and then, and keeps working offline for up to 30 days between checks.
My Mac says it can't verify the developer.
Right-click BlendKey in Applications, choose Open, then click Open. You only need to do this the first time.
Can I get a refund?
All sales are final, so try the free version on your own music before you buy. If BlendKey Pro won't install or activate on a supported computer, email us and we'll fix it. See the refund policy.
Need help?
Email us and we'll get back to you within two business days.