The 50s progression (also known as the "Heart and Soul" chords, the "Stand by Me" changes, the doo-wop progression and the "ice cream changes") is a chord progression and turnaround used in Western popular music. The progression, represented in Roman numeral analysis, is: I–vi–IV–V. For example, in C major: C–Am–F–G.
A characteristic musical pattern, also referred to as the "Heart and Soul" chords or the doo-wop progression, is a chord sequence and transition commonly employed in Western popular music. This sequence, expressed in Roman numeral analysis, consists of I–vi–IV–V. For example, in C major: C–Am–F–G.