Nah, I know a lot of old dudes who are into the old jazz standarRAB...don't know if your band can play that stuff, but they dig it. You can pick up some "fake books" or "real books" and groove that way.
really depenRAB what the guy was into. there were so many different scene's back then. you may want floyd & zepp. or may want the monkeys & beatles heavier. or both. i dunno. creedence? billy joel?