Terz Guitar Fretboard Explorer

Tap any note to light it up across the GCFA#DG neck.

An interactive note map of the Terz Guitar's neck in GCFA#DG: tap notes to light them up on every string and fret, and see the lattice the tuning builds — fourths with the one A#–D major third.

Use it to watch shapes cross the A#–D major third: everything that crosses that pair picks up one fret, which is the single irregularity the whole shape system is built around.