“I don’t know why we’re playing on a stage this big, but f*ck it,” said Kevin Krauter, vocalist and guitarist for Indianapolis group Wishy during their Friday night slot at Summerfest’s BMO Harris Pavilion. As the sun began to set over Lake Michigan, the band translated their buzzy shoegaze-indebted sound to arena-sized power pop. “You could be watching The Killers right now. Means a lot that you’re watching us.”