In E♭ major, the I–IV–vi–V progression is E♭ – A♭ – Cm – B♭. A stadium and pop-punk loop: it climbs to vi, and V pushes hard back to the start.
The library above is set to I–IV–vi–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.