I'd say, keep playing what you know and are passionate about. The authenticity will definitely help the performance shine. Plus, I know a lot of younger people - myself included - love older music as much as they do the new stuff, sometimes maybe even more smile

I've been at bars/pubs where a there is a cover band playing. It doesn't matter if the entire place is packed with 20-somethings - if that band plays Don't Stop Believing, the whole place sings along.

Cheers,
Deryk