Free Tool · No sign-up
Metronome & Scale Drone
Metronome
120
BPM
Beat
Click
Vol80%
Scale Drone
Key
Mode
Tone
Vol45%
Scale
CDEFGAB
Save your songs, setlists & sessions
Band OS is free during pilot: chord charts, rehearsals, fan page. Everything your band needs.
Sample-accurate timing
Uses the Web Audio API lookahead scheduling pattern, queuing beats 100 ms ahead viaAudioContext.currentTime. Industry-standard technique used by professional browser DAWs. Zero drift at any BPM.
Root-note scale drone
Start a continuous drone on the root note of your chosen key. Change the key and the drone retrunes instantly with no need to restart. Four synthesized tones: Warm, Bright, Lush, Dark.
Free, no sign-up
No account, no download, no ads. Sign up for Band OS to save songs with chord charts, build setlists, and run rehearsals. Free during our pilot program.