Harmony checker

Type a note like F#4 or Bb2 — or just F# and the nearest octave is chosen.Enter next chord · ↑↓ other voice · Alt+↑↓ a scale step up or down. C4 is middle C.

Results

hmmony checks voice leading: the rules on this page. It does not name chords or judge the harmonic progression, so a passage with no findings can still be the wrong harmony for the exercise.