Problem is channeling some serious ghosts. On "Hennessy," a single from the German-born, Compton-bred rapper's Outta Town mixtape, Tupac Shakur looms large. The man who made the titular liquor inextricable from the word 'enemies' is even quoted at length by T.I., who turns in a stellar guest verse alongside Rich Homie Quan, who is also in fine form. Outta Town is a collaboration between Problem and DJ Holiday and is scheduled to be released tomorrow (Feb. 24).

T.I.'s 2014 album, Paperwork, spawned hits in "No Mediocre" and "About The Money," the London on da Track-produced song that helped vault Young Thug into the national consciousness. Tip has also been notable over the past year for his shepherding Iggy Azalea into the rap world. Fellow Atlantan Rich Homie Quan has enjoyed considerable success of late for his collaborative mixtape with Thug, The Tour, Part 1.

Problem's most recent release was last August's 354: Lift Off which featured Childish Gambino and saw Problem rapping over a collection of the most inescapable contemporary beats, from Bobby Shmurda's "Hot Nigga" to Disclosure and Sam Smith's "Latch."