Cuatro Tools

Everything here runs in your browser — nothing to install, nothing to sign up for.

Tuner

Reference tones for every tuning charted here — B–E–A–D–G, A–D–G–C–F and A–D–F#–B — plus a mic tuner where your browser allows it.

A steady click from 30 to 280 BPM with accented downbeats — slow enough for a vals, fast enough for a joropo.

Choose four colours and a whole contrast-checked palette is derived for every page on the site.

Point the click at something real: the joropo bar counted three ways and six · four-string drills · ten-string drills · changes that land where the brake falls · the two instruments compared. Every tool runs in the browser — nothing to install, nothing to sign up for.