Andy Crowley on Instagram: "The C major scale is the "musical ruler" used to understand almost all other Western music concepts. This scale provides a "safe" inventory of notes for creating melodies and solos that will naturally sound "correct" over songs in the key of C.⁠ ⁠ Many popular songs use this scale, including The Beatles' "Let It Be", Bob Marley's "No Woman, No Cry," and Fleetwood Mac's "Dreams""