In a world that has ubiquitous chanteuse Feist shilling iPods and paisley poppers Of Montreal pimping wallaby steaks at Outback, it seems a little faux-naif to appear offended when an independent artist or band makes a decidedly commercial career move. It wasn’t all that odd, in fact, to see a retro rock band such as Black Mountain appear on the Spider-Man 3 soundtrack last year alongside Snow Patrol and Rogue Wave. What was surprising was how great its contribution, “Stay Free,” sounded. The song, a sun-dappled, wistful loper, is a slight departure from the band’s more propulsive, psych-rock style. But a listen to “Stay Free” or the equally laid-back “Wild Wind,” both of which are on Black Mountain’s strong second outing, In the Future, should be enough to take your mind off such petty questions as “Which band sold out this week?” Black Mountain performs with Bon Iver at 8:30 p.m. at the Rock and Roll Hotel, 1353 H St. NE. $12. (202) 388-7625.