What 2014 mixtape is by an individual who wrote for an artist signed to Warner Bros.?
Marc E. Bassy:  His solo works include his 2014 mixtape "Only the Poets", 2015 release "East Hollywood", and the 2016 EP "Groovy People", including the single "You & Me" featuring G-Eazy. Marc E. Bassy:  Before putting out his own works, he was a songwriter, and wrote for artists such as CeeLo Green, Sean Kingston, Wiz Khalifa, and Ty Dolla Sign. Wiz Khalifa:  He released his debut album, "Show and Prove", in 2006, and signed to Warner Bros.
"Only the Poets"