Professional desktop analysis software; handles polyphonic material

  • Melodyne (Celemony) – Professional desktop analysis software; handles polyphonic material.
  • KeyFinder – Open-source key-detection tool (macOS; integrates with Mixxx).
  • Tunebat Song Key & BPM Finder – Online service that estimates key and BPM from uploaded audio.
  • AudioKeychain – Web-based tool for batch analyzing an entire library’s key and BPM.
  • Chord AI – iOS/Android app using AI to identify chords and key in real time.
  • Song Key Finder – Android app that determines the key from mic input or local files.
  • Ableton Live 12 (Scale Mode) – Displays/sets key and scale per clip inside the DAW.
  • Logic Pro – Automatically infers key signature from selected chords and writes it to the Signature track.

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