F# Ionian on Guitarrón

F# Ionian runs 7 notes to the octave. Below it is mapped onto this instrument's A–D–G–C–E–A fingerboard with every F# marked, because what a player needs mid-number is not the pattern but where the root is when the harmony moves under it.

Bright, resolved, and stable. The foundation of Western tonal music and the most common mode in pop, classical, folk, and jazz.

Heard in: Pop, classical, country, folk, gospel — the default major tonality of Western music.

The bass takes almost no melodic line, and that is precisely why these matter: the notes between one root and the next come out of a scale, and an approach that lands wrong is the loudest wrong note in the ensemble.

Take it slowly against the playback until the geometry stops being geometry, then put it under a number in F# and let the written line pick its own notes out of it.