Of late, the radio’s mercilessly been beating the Flo Rida smash single “Good Feeling” into our brains. Like many Flo Rida songs, it’s annoying. But behind his gratingly shouty rapping, there’s a great sample–the 21-year-old Swedish DJ Avicii’s “Levels,” an aqueous, uplifting house track that in turn samples the brilliant opening lines of Etta James’ 1962 hit “Something’s Got a Hold of Me.” “Levels” has become enough of a hit in its own right to chart on iTunes and the Billboard Hot 100. Avicii’s taking advantage of the fact that nothing’s more in vogue right now than dance music–two or three months ago you’d never heard of him; now he hosts a popular monthly podcast called LE7ELS; his collaboration with David Guetta, “Sunshine,” is currently nominated for a Grammy for Best Dance Recording, and his House For Hunger tour is taking him around the globe. ERIN K. THOMPSON

Wed., Jan. 25, 8 p.m., 2012