Electric Bass: A Major Pentatonic Over the Changes
Where A Major Pentatonic lies at this seat, and what a chorus takes out of it.
A Major Pentatonic runs 5 notes to the octave, laid out here on EADG with every A flagged. Mid-chorus the pattern is not what you need; where the root is when the chord changes underneath you is.
Open, sunny, and hard to play wrong — with no half steps there is nothing to clash, so every note sits comfortably over a major chord. Warm, folksy, and singable.
Heard in: Country, bluegrass, folk, gospel, Southern rock, and countless pop hooks — from "Amazing Grace" to "My Girl".
The electric bass can hold a note long enough for it to be heard as a choice rather than a step, so a scale here is read for its strong tones first and its passing tones second.
Play it slowly against the audio until it stops being a shape, then put it over two bars of a form and let the chord tones decide which of the notes you actually keep.