What 2014 mixtape is by an individual who wrote for an artist signed to Warner Bros.?
Wiz Khalifa Cameron Jibril Thomaz (born September 8, 1987), better known by his stage name Wiz Khalifa, is an American rapper and actor. He released his debut album, "Show and Prove", in 2006, and signed to Warner Bros. Records in 2007. His Eurodance-influenced single, "Say Yeah", received urban radio airplay, charting on the Rhythmic Top 40 and Hot Rap Tracks charts in 2008.
XV (rapper) Donavan LaMond Johnson (born July 9, 1985) better known by his stage name XV is an American rapper, singer and songwriter from Wichita, Kansas. He first gained major attention after the release of his twelfth mixtape "Everybody's Nobody", for which he received two awards from DJBooth.net.