In E major, the I–vi–IV–V progression is E – C♯m – A – B. The doo-wop loop: warm and nostalgic, with V pulling strongly back to I at the end of every turn.
The library above is set to I–vi–IV–V in E major. Press Play to hear it with strummed guitar, bass and drums in a pop groove, tap any chord to hear it on its own, or pick another key or a capo.