The King of the Trill is back. Years after his last solo disc, Bun B has returned with a brand new album Return Of The Trill, due out on March 16. For the first single, Bun is joined by two Texas heavyweights in Slim Thug and Lil’ Keke for “KnowWhatImSayin,” produced by Big E. Hear the latest from Bun’s upcoming fifth solo disc below.