The first thing most critics have written in the numerous reviews of Tegan and Sara’s new album Heartthrob is how “danceable” it is. Fans who have followed the Canadian twins’ conjoined music career for the last 13 years, however, shouldn’t be concerned the angst and cutting lyrics they’ve looked forward to since 2009’s Sainthood haven’t been sacrificed. The indie rockers synth-up on tour, as well. They return to Cain’s Ballroom, 423 N. Main St., Tulsa, for a Monday, March 11, show. Doors open at 7 p.m. with opening guest act Diana. Getting a fair amount of attention, Heartthrob debuted in January at No. 3 on the Billboard charts, and it’s hard to not be pleased with that. And, who doesn’t like to dance even if just alone? Tickets are $34-$36 each, available at Cain’s box office and at www.cainsballroom.com.