Recognize the chords of any song automatically with Magic Chords. This free online tool uses AI for chord recognition and analysis — it detects the chord progression, key, and tempo from an audio file or video URL, then exports a ready-to-play chord sheet.
Chord recognition (also called chord detection or chord analysis) is the process of analyzing an audio recording to identify the chords being played at each moment. It powers tools that produce chord sheets, lead sheets, guitar tabs, and practice tracks from plain audio.
Magic Chords uses Madmom's trained neural networks to recognize chord patterns, with Essentia as a hybrid fallback. The audio is segmented by beat and measure, and each segment is classified into the most likely chord.
After recognition, a post-processing stage corrects timing, harmonizes the key, and scores chord confidence so the exported chart matches what is actually played.
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