I'm a DJ/producer with a software background, so this started as a personal tool and turned into something I figured other people starting out would actually want. It's 100% free — no account, no upload limits, no subscription.

Features — Drop in single tracks or batch-analyze mulitple songs at once — Accurate BPM and key detection, with Camelot wheel mapping built in — Live Listen mode — point it at your desktop audio or a microphone and get instant BPM/key on whatever's playing, even obscure remixes or stuff that's only on YouTube/SoundCloud with no metadata — Auto-build harmonically compatible sets from your analysis history, with BPM ramping from a starting tempo to a target tempo — Drag-to-reorder playlist with live harmonic compatibility warnings (so you know before you're on the decks if two tracks clash) — Export straight to Rekordbox XML, plus plain text and CSV if you just want a track list.

Tried it out for a quick mashup and the browser-based mixing was surprisingly snappy, no lag even with three tracks loaded. Love that there's no signup nonsense, just open and go.

EZMIX Launch

DJ,bpm detection, key detection, tool for DJs, free

DJ,bpm detection, key detection, tool for DJs, free