Live Nation National

Despite their determinedly of-the-moment sound, Redfoo and Sky Blu are carrying on a long pop lineage: the former is Motown founder Berry Gordy's son, the latter his grandson. As red-hot electropop duo LMFAO, the uncle-nephew pairing electrifies dance floors with manic odes to party life. The 2012 Sorry for Party Rocking tour explodes with fan favorites such as "Party Rock Anthem" and newer hits such as "Sexy and I Know It," which has a bouncy swagger that dominated the Billboard Hot 100 chart for 28 weeks. Meanwhile, the band parades in neon animal prints amid backup dancers, bobbing beneath giant robot heads, tossing inflatables into the crowd, and creating a spectacle Metro Weekly calls "enormously entertaining."