Lupe Fiasco got involved in a bit of a situation on Twitter earlier tonight with fellow Chi-Town artist Chief Keef, and to follow up and switch gears, he decided to let go of an unfinished version of a new song, "American Terrorist Pt. 2." His upcoming album Food & Liquor II: The Great American Rap Album Pt. 1 drops September 25. Listen below. He also mentioned on Twitter that this album may be his last. Could Lupe really be retiring from rap? 

Listen: Lupe Fiasco "American Terrorist Pt. 2"

[via XclusivesZone]