5-String Banjo Fretboard Explorer

An interactive note map of the 5-String Banjo's neck in gDGBD: tap a note to light it on every string and fret, and watch the lattice this tuning builds — open g, with the short g riding above every other string.

Light up g and the short string's stubbornness becomes obvious: it appears once, at one pitch, and nowhere else. Everything a five-string player learns about choosing keys starts from that single lit square.