Celebrating the beginning of its 12th year in business, independent record shop 52.5 Records (561 King St.) held a two-day bash aimed at promoting its vast inventory of new and used CDs, weird vinyl, cool books, DVDs, and gadgets. 52.5 opened its doors for the first time in 1997 at a small space on 52 1/2 Wentworth Street, before owner/manager Clay Scales moved the store to Upper King Street in 2007. The birthday events included a food drive benefiting the Lowcountry Food Bank. Local indie-pop combo Autumn Gold assembled “on the rug” Sunday night for a quiet, mostly acoustic opening set. In a slightly hush-hush arrangement, the headliner mystery band Birdsmell turned out to be none other than singer/guitarist Ben Bridwell of Band of Horses. Bridwell performed sitting down (and practically out of sight, except for those crowded in the front two rows). Surrounded by a few small amps, an analog drum machine, and a small synthesizer, he joked that he’d never done this kind of thing before. A few classic Horses tunes made their way into the set, but Bridwell mostly introduced new songs from the band’s forthcoming album — the songs chimed with as much casual, ethereal spookiness as ever.

For additional live reviews and concert photos, go online to Feedback File at music.ccpblogs.com.