Come to think of it, Marshbanks Park (Hiller@Willow, on West Bloomfield's western edge) has free concerts on Friday evenings all summer long...or at least they did. Who knows what's going on with funding problems and all. Still, I'd check into it. Pontiac Trail east to Green Lake Rd north to Commerce Rd east to Hiller north. Fun park anyway, even if there's no beach.