Enter the key and tempo for two tracks — see one score, and exactly what's driving it.
Two halves, weighted evenly, using the same rules as the Key Wheel and Tempo Range tools — no hidden math.
Same code scores highest, then relative major/minor, then one step around the wheel. Farther apart drops fast.
Scored on % difference — including automatically checking half-time and double-time, and using whichever is closest.
This is a transparent general-purpose model, not Tuttii's internal scoring — the real app may weigh things differently.
Drop a project together and see a match score for every available song, automatically — no manual key or tempo math, ever.