Clark Park is just a cool place to have outdoor concerts. If you enjoyed hanging out for the day in the park at Best Fest, then you’ll have your chance again when they celebrate Clark Park Festival’s 40th Anniversary with the funky albeit cringingly white dance outfit Prowler who will be headlining the event. Each time I hear these guys it’s something new I find perplexing about their sound from the percussions versatility to the music’s urgency or splintered vocals, but somehow it all works out. They’ll be joined by the ghoulish indie pop of Conversations with Enemies as well as The Josh and Pete Band, Upsincefriday, The Spades and many more. Clark Park, 43rd and Chester Sts., 12pm – 8pm, Free, All Ages – Adam G.