PMI Calculator

audio (left) against the extracted MIDI (right) — visualize, play, and correct the transcription

editing: new upload double-click empty = complete a note · right-click a note = what does the audio say? · drag note = pitch · drag left/right edge = length · ↑/↓ = ±semitone · Ctrl+Z = undo
transcribed edited completed by you
notes 0 low-confidence 0 edited 0 Confidence = MIDI velocity. Edited notes turn dark teal (verified, conf = 1).
PMI Edit a song above, capture it as A or B; the key is auto-estimated (you can listen to the two candidate keys and pick the one that sounds right — fewer accidentals — or set it manually). A captured song can be brought back with ✎ Edit and re-captured to update it. With both captured, compute PMI.
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