Oh covers... the stuff we used to play was in a few different sets
Basic early rock/doo-wop set
Chuck Berry Set
Early 60's <lotta girl groups> Set
We had -
Drums, lead and rhythm guitar, bass, piano, sax, two gal singers, and the bass player did a mean Elvis (and I played bass then). Too be fair, the gal singers were the gf and wife of band members, and did a bit of an act where they'd schmooze their way onto the stage, and we'd "back em up" while they pretended to ham it up. Of course we never played to the same crowd twice, so it worked!. And they were both very good - which also didn't hurt any.