On July 8, NASA launched manned shuttle Atlantis for the very last time, marking the end of its Space Shuttle program. Which means that, for the foreseeable future, anyone hoping to fulfill his or her dream of exploring the cosmos will have to save up 20-35 million big ones and hitch a ride on a Russian craft. For those who don't have the scratch, Mike Posner recaptures a little of the fear and excitement of space travel with his rendition of Sir Elton John's Rocket Man, a single released in the final years of NASA's groundbreaking Apollo program. The latest leak off the Duke University grad's highly-anticipated forthcoming mixtape, this hazy cover finds Posner trading the pop icon's light-rock backdrop for an atmospheric blend of swirling synth arpeggios, keybass blurts and reverb-drenched percussion as he delivers his raspy rendition of the record's verses. Riding shotgun—do rockets even have a shotgun seat?--UGK lifer Bun B emphasizes the psychological side of the song, using the heavens as a metaphor for the distance between himself and his woman. So, has Posner done his source material justice? If you approve, more innovative pop goodness awaits on his DJ Benzi-hosted The Layover mixtape, dropping Nov. 20.