Lots of indie bands try to blend elements of R&B and soul into their music and Brooklyn’s Apollo Run do it about as seamlessly as anyone. The band shows of their considerable talent by going from catchy piano-driven pop to brassy New Orleans soul all fueled by the incredibly versatile vocals of main man, John McGrew. Known for their highly energetic performances, they will be playing Stage 2 of the Rockwood Music Hall in NYC on May 21. $5.