BPM, key, stems, chords, MIDI and mastering — instant, free, and built for producers, DJs and creators.
Detect tempo, downbeat and groove pocket from any audio file.
OpenDetect major or minor key plus the matching Camelot wheel code.
OpenInteractive harmonic mixing wheel — drop a track to detect.
OpenFull chord progression with timestamps and Roman numerals.
OpenBS.1770 loudness with per-platform Spotify, Apple and YouTube checks.
OpenStrip the lead vocal — clean instrumental and acapella stems.
OpenVocals, drums, bass and music — clean MP3 stems.
OpenPitch-accurate melody MIDI plus chord progression MIDI export.
OpenRecord vocals on any instrumental — autotune snaps to the song's actual key.
Open9:16 promo videos for TikTok, Reels and Shorts — wave + BPM/key overlay.
OpenTime-stretch from 0.5× to 2× speed without altering pitch.
OpenTranspose audio ±12 semitones with the tempo locked in place.
OpenTap along — drift-corrected BPM updates in real time.
OpenSample-accurate Web Audio click with subdivisions and meters.
OpenChromatic pitch detection from your mic with ±1-cent accuracy.
OpenReal-time FFT with peak hold, log scale and waterfall mode.
OpenOne upload — BPM, key, Camelot, stems, MIDI, mastering and release-ready clips, all in a single workbench.