What American rapper has worked with drummer Travis Barker and fellow rapper Chamillionaire?
Paul Wall
Title: Ridin'
Passage: "Ridin'" is a song by American rapper Chamillionaire, released as the lead single from his debut studio album "The Sound of Revenge" (2005).  The song, produced by Play-N-Skillz, features a guest appearance from fellow American rapper Krayzie Bone, of Bone Thugs n Harmony.  Its title is often incorrectly assumed to be "Ridin' Dirty", due to the chorus.  The lyrics concern racial profiling and police brutality, as well as the stereotyping of African-Americans driving a vehicle with drugs or other contraband on the inside ("Riding dirty").
Title: Paul Wall
Passage: Paul Michael Slayton (born March 11, 1981), better known by his stage name Paul Wall, is an American rapper from Houston, Texas.  He is affiliated with Swishahouse Records.  He has released several albums under the label and collaborating with other rappers signed to the label.  He was musical partners with rapper Chamillionaire with whom he released several albums including the independently released "Get Ya Mind Correct".  In 2005, he was signed to Atlantic Records and became successful with his major-label debut "The Peoples Champ". " Get Money, Stay True" followed in 2007.
Title: Travis Barker discography
Passage: American drummer Travis Barker has released one studio album, one extended play (EP), and 19 singles.  Barker, best known for his work with Blink-182, has been a part of various punk rock bands throughout his career, including the Aquabats, Box Car Racer, Transplants, +44, and Goldfinger.  Outside of his work in rock music, Barker has worked prolifically in hip hop; he was a member of the supergroup Expensive Taste and the drummer-and-DJ duo TRV$DJAM, and has released extended plays with Yelawolf, and Asher Roth and Nottz.  He holds many guest appearances on songs from a variety of musicians, including many rappers such as Lil Wayne, Paul Wall, the Game, and Run the Jewels.  Barker became well known in the late 2000s for creating rock remixes to rap songs.  His debut studio album, "Give the Drummer Some", was released in 2011 and debuted at number nine on the "Billboard" 200 in the United States.
Travis Barker discography Paul Wall