Tegan and Sara

Updated 3/6/2013

Wednesday: Cult-adored sisterly duo plays a sold-out First Ave. Also: psych-rockers Caveman.

Tegan and Sara
Photo by Warner Bros.

Tegan and Sara

8 p.m. • First Avenue • 18-plus • sold out

Tegan and Sara have sold out and gone pop, some fans are contending, as the cult-adored twin sisters/bandmates return for the first show behind their month-old album “Heartthrob.” It’s true, this one’s a lot slicker and more accessible than past releases, with truly throbbing dance beats and bubble-gummy choruses that suit the Bieber-like, teen-centric title. The Quin siblings’ sophisticated harmonies and jagged songwriting style are still front and center, though. Any fans who want to sit this one out obviously don’t know how to have fun. Fellow Canadian band Diana opens. Chris Riemenschneider

Caveman

9 p.m. • 7th Street Entry • 18-plus • $10

Contrary to its Cro-Magnon moniker, the Brooklyn bros of Caveman seemingly have a high musical I.Q. On last year’s Fat Possum debut “CoCo Beware” (named after former pro wrestler Koko B. Ware), the lucid psyche-rock quintet deftly weaves together dense instrumentation with sweeping, ghostly harmonies without drowning frontman Matthew Iwanusa’s oddly powerful coo. When not on the road, guitarist Jimmy Carbonetti runs an acclaimed custom guitar shop in Manhattan. Caveman is dragging its knuckles across the country in support of its self-titled sophomore album due April 2. Computer Magic and Strange Names open. Michael Rietmulder