Usher - Yeah! (lyrics) Ft. Lil Jon, Ludacris -

Usher 's 2004 smash hit "Yeah!" originated from a frantic, last-minute production change after the instrumental was mistakenly shared with Petey Pablo . By adding a high-energy synth melody to the original track, Lil Jon transformed it into a landmark crunk anthem. The Story Behind Usher and Lil Jon's 'Yeah!'