"Yeah!" is a song by American singer Usher. It was released on January 2004 as the lead single from "Confessions" (2004). It was written by Lil Jon, Sean Garrett, Patrick J. Que Smith, Ludacris, Robert McDowell, and LRoc. It was produced by Lil Jon. The song is an R&B and crunk song. It features Lil Jon and Ludacris.