C Mixolydian on Guitar

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

Major with a flatted 7th (b7) — bright and bluesy. The dominant chord turned into a tonal center with a rock/folk edge.

Heard in: "Sweet Home Chicago", "Norwegian Wood" (Beatles), Celtic and folk music — anywhere a major sound needs a darker, looser edge.

Scale work in the armonía is for the passing figure that joins one chord to the next — a few notes at the seam of a change, played by one member while the other keeps the pattern intact.

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