Caroline Rose came prepared for her first visit to SXSW as a performer. "I keep a laugh track on my phone in case no one shows up," she joked at the New West Records day party on Friday. The stage was even draped in festive strings of chili peppers, and that goofy, unencumbered energy permeated Rose's set. With its mix of sunny melodies and acerbic wit, the material from her newly released LP, Loner, was frenetic and freewheeling. "This is my favorite song," she beamed in introducing what seemed like every other song, but it was a bit borne from earnest enthusiasm, not irony. J.G.