Mashup Compatibility Checker

How the score works

The checker compares normal, half-time and double-time beat counts. Relative tempo difference contributes up to 45 points, harmony up to 45, and complementary roles up to 10. Unresolved roles or speed changes over 8% cap the score at 69. These are editorial heuristics, not measured probabilities or proof that two arrangements work.

Before you export anything

Test short phrases first. Watch for clashing basslines, vocals that fight for the same moment and section lengths that do not line up. The most useful result is often a transition idea, not a full-length overlay.