Complex sentence: Sellers has been the recipient of the "Gil Evans Fellowship in Jazz Composition, the Sammy Nestico Award", and most recently, the "Julius Hemphill Composition Award", Sellers is the only artist in history to have received all three awards.
Split into simpler sentences: Sellers has been the recipient of the Gil Evans Fellowship in Jazz Composition, the Sammy Nestico Award, and most recently, the Julius Hemphill Composition Award. He is the only artist in history to have received all three awards.