Strike it by hand, or program two lines that count the same bar in different numbers. Play it right here in your browser — or take it with you on Mac and iPad.
Click the drum, or focus it and drum along on Q W E / I O P, and ring the bell on B
The bottom line sets the tempo and the length of the bar. The top line slices that same bar into its own number of steps — three against four, five against seven, anything up to sixteen. However far apart they wander, both lines land together on beat one.
FrameBeat is also a native app — the same instrument, rebuilt in SwiftUI, with one App Store listing for both.
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