> It's also arranged in the circle of fifths So that's why the accordian player I walk past on the promenade always sounds like he's playing Autumn Leaves: cir

> It's also arranged in the circle of fifths So that's why the accordian player I walk past on the promenade always sounds like he's playing Autumn Leaves: circle of fourths/fifths chord progressions are very natural to play on the instrument. (Of course, he's not playing Autumn Leaves; that's just the first tune I think of with that chord progression; but there are zillions. The Beatles' You Never Give Me Your Money, and I Will Survive are a couple of other famous popular music ones.)