For your soul-tinged pop music fix, one of the first bands you should turn to is Lake Street Dive. Thanks to some well-deserved word of mouth, most notably a 2012 cover of Michael Jackson’s “I Want You Back,” the quartet of Rachel Price on vocals, Bridget Kearney on stand-up bass, Mike Olson on guitar and trumpet, and John Calabrese on drums have taken their act from the Boston Conservatory of Art to venues around the world, including both 9:30 Club and Wolf Trap in the DC area last year. The quartet returned to DC with a sold-out set at Lincoln Theatre that included old favorites, sing-along covers, and even a few new songs from their still-unannounced fourth album.