Who raps on Usher's "Yeah"?

Ludacris raps on Usher's "Yeah!" The song, released in 2004, features Usher alongside Ludacris and producer-rapper Lil Jon, but Ludacris delivers the song's most prominent guest rap verse—the section many listeners identify when asked this trivia question.

"Yeah!" was created for Usher's fourth studio album, "Confessions," after executives felt the project needed a stronger lead single. Lil Jon produced the track and helped shape its blend of crunk and R&B, a style often called crunk&B. Ludacris supplied the distinctive, high-energy rap performance.

Lil Jon's presence can cause confusion because he is also billed as a featured artist and appears prominently in the music video. In the standard track version, however, Ludacris is the featured rapper most commonly meant by the question. The single became Usher's fourth U.S. number one and stayed atop the Billboard Hot 100 for 12 weeks. It also won the 2005 Grammy for Best Rap/Sung Collaboration.