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.
Ty Dolla Sign Tyrone William Griffin Jr. (born April 13, 1985), known professionally as Ty Dolla Sign (stylized as Ty Dolla $ign or Ty$), is an American singer, rapper, songwriter, and record producer. He first gained major recognition in 2010 for his feature on YG's "Toot It and Boot It", which he had written and produced for Def Jam Recordings. In the summer of 2013, he signed a record deal with Wiz Khalifa's Taylor Gang Records. In November 2015, he released his debut studio album, "Free TC", which peaked at number 14 on the US "Billboard" 200.