Getting started
What SignalKey is, how it works, and what you need to start analysing tracks.
BPM & tempo detection
Everything about how SignalKey finds beats per minute and what to do when the number looks off.
Key, Camelot & harmonic mixing
Why we report the key the way we do and how to use Camelot codes to mix smoothly.
Stems & vocal removal
Splitting a finished song back into its parts — vocals, drums, bass and music.
MIDI conversion & chords
Turning audio into MIDI for re-arranging, scoring and chord pulls.
Mastering, LUFS & loudness
What loudness metrics mean and how to ship a master that doesn't get turned down by Spotify.
Live tools
On-device tools that run in real time — tuner, metronome, tap tempo, spectrum.
DJ workflow & harmonic mixing
Building Camelot-aware sets and using SignalKey alongside Rekordbox, Serato and Engine DJ.
File formats & uploads
What you can drop in, how big, and how we handle the file once it's uploaded.
Privacy, data & security
What we do with your audio, your IP and your analytics — and what we never do.
Pricing, ads & plans
Two tiers — Free and Studio. What each unlocks and what stays free forever.
API & integrations
Programmatic access to BPM, key, stems and MIDI for plugins and pipelines.
Troubleshooting & support
What to do when something looks wrong, plus how to reach a human.
Still have questions?
We monitor support@signalkey.io every weekday and aim to reply within 24 hours. Critical Studio outages are escalated to on-call within an hour.