Key Compatibility
Pick two keys, get an instant verdict — and a mixing technique tuned to the relationship. When the keys don’t directly mix, the tool lists every bridge key that’s a safe match for both, so you can plan a two-move route through the wheel.
Simple Mix Upper
safe relationshipSubtle energy lift — the next step clockwise on the wheel.
Standard EQ-swap blend at the phrase boundary. Bass goes from outgoing to incoming on the downbeat, mids and highs ride a moment longer for cohesion.
How the verdict is calculated
The Camelot wheel encodes harmonic relationships as a 12-position circle with two letters per position — A for minor, B for major. Take any two keys and the relationship between them is fully determined by two numbers: the difference in Camelot numbers (treating the wheel as circular, so 12→1 is +1 not −11) and whether the letters match.
Same number, same letter is the same key — perfect harmony. Same number with the letters flipped is a tonal shift, the relative-major / relative-minor pair that shares all seven pitches but flips the mode. Same letter with a number difference of ±1 is a simple mix — the closest neighbours on the wheel, with most pitches shared. ±2 is an energy shift, ±3 a parallel move, ±4 a related-key move, ±6 the tritone. Anything else is distant — no standard harmonic relationship.
Every verdict includes a mixing technique tuned to the specific relationship because the same blend approach doesn’t work for every distance. Long blends are great for safe matches; planned moments and filter sweeps work for advanced moves; hard cuts and bass filters rescue distant pairs. The technique section above translates the harmonic distance into the practical move that lands cleanest on a dancefloor.
How bridge keys work
Two keys that have no direct safe-match relationship can almost always be linked through a third key that bridges both. Take 8A (A minor) to 11A (F♯ minor) — they’re three steps apart on the wheel, a parallel move that exposes harmonic gaps under a long blend. Drop a track in 9A or 10A between them and you’ve turned one risky transition into two safe-match transitions.
The calculator finds bridge keys by intersecting the safe-match sets of both source and target. Any key that appears in both is a valid bridge — it works outbound from the source and inbound to the target. Most distant pairs have at least one bridge; some have several, in which case you can pick whichever fits the energy and genre you’re running.
For full set planning, the Flow Builder does this routing automatically across the whole catalog — finding bridge tracks that work harmonically, rhythmically, and energetically, scored by Mixgraph’s six-dimension chemistry engine.
FAQ
What does "safe match" actually mean?
A safe match is a key relationship where two tracks share enough pitches that their chord-bearing layers (basslines, pads, lead lines) won't clash if they overlap. The standard safe matches are the same key, the relative major or minor (same Camelot number, opposite letter), and the immediate neighbours one step clockwise or counter-clockwise on the wheel. Together those four relationships cover most of what DJs need for seamless mixing.
Can two keys clash even if they look compatible on paper?
Yes. The Camelot rules describe pitch-set overlap, not arrangement compatibility. Two tracks can sit in adjacent keys but still clash if their melodies move at the same time, occupy the same frequency range, or use the same root note in different octaves. Harmonic compatibility says "the chords won't fight" — it doesn't guarantee the arrangement will sound good. Always trust your ears once the math says yes.
What if my two tracks don't directly mix?
Use a bridge track. When two keys have no safe-match relationship, the calculator above lists every key that's a safe match for both — drop a track in one of those keys between the two and you've turned a one-step distant move into two safe-match moves. This is how DJ sets travel from one harmonic neighbourhood to another without sounding forced.
When should I deliberately use a key clash?
When you want the listener to notice. The tritone (number ±6) is the classic dramatic move — half an octave of harmonic distance, used by most working DJs as a peak-time moment rather than a hidden transition. Distant relationships in general work as section breaks: filter the bass on the outgoing track so the percussion overlaps but the harmony doesn't fight, then let the new key land on a phrase boundary. The rule isn't "never clash" — it's "clash on purpose, with technique to back it up".
How is this different from the Camelot wheel tool?
The wheel is for exploration — pick a starting key and see all 23 possible destinations grouped by tier. This tool is for verification — you already know your two tracks' keys, you just want a yes/no with the right technique attached. Use the wheel when planning a set; use the compatibility checker when you're looking at two specific tracks and need a quick verdict.
Related tools
Plan a full set with chemistry-scored transitions
Key checks, on the move
Mixgraph for iOS and Android — chemistry-scored DJ planning.
