Professional reference tools for harmonic mixing, BPM, timing and key analysis — free forever
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01
Harmonic Key Finder
Click any key on the wheel — compatible keys highlight instantly. Mix between highlighted keys for seamless transitions.
Selected: —
Perfect Match
Smooth (±1)
Relative (A↔B)
Energy Boost (+2)
Rules: Same number = perfect · ±1 same letter = smooth · A↔B same number = relative · +2 same letter = energy boost
02
Key Converter
Convert between Camelot notation and musical key names. Your DJ software may show either format.
Harmonic Position → Musical Key
Full Reference
Pos.Musical KeyType
1AAb minorMinor
1BB majorMajor
2AEb minorMinor
2BF# majorMajor
3ABb minorMinor
3BDb majorMajor
4AF minorMinor
4BAb majorMajor
5AC minorMinor
5BEb majorMajor
6AG minorMinor
6BBb majorMajor
7AD minorMinor
7BF majorMajor
8AA minorMinor
8BC majorMajor
9AE minorMinor
9BG majorMajor
10AB minorMinor
10BD majorMajor
11AF# minorMinor
11BA majorMajor
12AC# minorMinor
12BE majorMajor
Musical Key → Key Notation
Tip: Rekordbox shows musical keys (e.g. "Am"). Serato and Traktor may use Camelot or Open Key. Use this to cross-reference between your software and SoundForge.
03
Set Duration Calculator
Work out track count, average mix length and the ideal energy arc structure for any set length.
Suggested Energy Arc
OpenerBuildPeakCool-DownCloser
Partner
04
Tap Tempo
Tap to the beat and get your BPM instantly, with half and double time. Works with Space from anywhere on the page.
—
BPM
—Half Time
—Double Time
Tap 4+ times for accuracy · Space to tap · resets after 3 s
05
BPM Compatibility Finder
Enter a BPM to see your safe mixing window, half time, double time and ratio transitions instantly.
BPM
Mixing window: Most software can pitch ±6% without audible artefacts. Anything inside the window can be beatmatched without sounding warped.
06
Phrase & Bar Timer
Enter a BPM to see bar and phrase lengths in seconds — set cue points with precision and never miss the drop.
BPM
Golden rule: Most tracks are built in 32-bar phrases. Set your mix-in cue 32 bars before the drop. At 128 BPM that's exactly 60 seconds.
Partner
07
Tracklist Key Analyser
Paste your tracklist — one track per line with the Camelot key. Every transition rated SMOOTH, WARNING or ROUGH instantly.
Ratings:SMOOTH Same key, ±1 or relative ·
WARNING Energy jump +2 ·
ROUGH Incompatible key
Put the Tools to Work
Now that you know your keys and BPM — let AI build you the perfect set.