Noisey has released the third instalment in their "Atlanta" doc-series. The third episode picks up at Quality Sound Studios in Atlanta, where Coach K runs the Quality Control label which hosts Migos and affiliates. Coach K explains the origins of trap music, tracing it back to Jeezy's mixtape The Streets Iz Watching in 2004. We also learn more about Gucci Mane and trap producer Zaytoven (whom we hear from directly), as well as the origins of the infamous beef between GuWop and Jeezy.