Three years ago, the xx burst through to the mainstream with its minimalist whisper pop gem “the xx,” which presented a uniquely imagined sonic galaxy of three-dimensional echoed space. The group stood out amid the maximalist indie world, and its music became the soundtrack to quiet, tense, late-night confessions. The group’s highly anticipated follow-up is called “Coexist,” and it’s a nearly identical album to the debut, mood-wise. Different songs, yes, created by artists three years older than when they last offered an album. But, nearly to a song, it’s a virtual replica: One good idea executed with similar results, like a second in a Mark Rothko series of canvases. Hollywood Palladium, 6215 Sunset Blvd., L.A. 8 p.m. Fri. $38.50. livenation.com.