"Grillz" is a song by American rapper Nelly featuring fellow American rappers Paul Wall, Ali & Gipp, and uncredited vocals from American singer Brandi Williams. The song was written by Nelly, Jermaine Dupri, Paul Wall, Ali, Gipp and James Phillips; it contains samples of Destiny's Child's "Soldier", written by Beyoncé Knowles, Kelendria Rowland, Tenitra Williams, Garrett Hamler, and Rich Harrison; it also contains samples of "Left Me Lonely" by MC Shan. Production was handled by Dupri. Following its release, it topped the US Billboard Hot 100 and reached the top 20 in Australia, Ireland, and New Zealand.

Cornell Iral Haynes Jr., better known by his stage name Nelly, is an American rapper, singer, actor, and entrepreneur. He grew up in St. Louis, Missouri, and embarked on his musical career in 1993 as a member of the Midwest hip hop group St. Lunatics. He signed with Universal Records in 1999 as a solo act to release his debut studio album, Country Grammar (2000) in June of the following year. Its namesake lead single and follow-up, "Ride wit Me" both entered the top ten of the Billboard Hot 100, while the album peaked atop the Billboard 200 and received diamond certification by the Recording Industry Association of America (RIAA). His second album, Nellyville (2002) spawned two consecutive Billboard Hot 100 number-one singles, "Hot in Herre" and "Dilemma", along with the top-five single, "Air Force Ones".