C Ionian, Fiddle Side
Where C Ionian lies on this reader's fingerboard, and what it is for.
7 notes to the octave, mapped below onto this reader's GDAE fingerboard, with every C called out. Those markers are the useful part mid-bar: a chart moves under you, and the thing you need is where the root went — not where the pattern started.
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.
This reader plays almost nothing the chart actually wrote: the numbers give the harmony and the line over the top of them is assembled, bar by bar, out of the notes on this page.
Play it slowly against the audio until the position stops being a position, then take it to a chart counted in C and let the numbers pick their own notes out of it.