The day it became uncool to arrive at a show on time was the day the world took a tailspin. The headlining band might carry the most weight, but that doesn’t mean that opening acts are any less worthy of concertgoers’ time. In fact, sometimes the supporting artists are so remarkable that you’re left with their performance swirling around in your thoughts even when the headliners take the stage. Such was the case at Iota Club and Café in Arlington, VA this weekend. The Blank Tapes, a California garage-pop band with groovy ‘60s sensibilities, topped the bill, supported by folk trio Song Preservation Society and surf-rock band Beach Day.