On Air NEW MUSIC: Chief Keef Ft. Lil Bibby & Ballout – Musty [AUDIO] Sep 5, 2017 5:49 AM Facebook X Chief Keef is back with a new mixtape called The W, his third project this year. Check out his song “Musty” off the tape, featuring Lil Bibby and Ballout. Listen on the Funk Flex app available on all iOS and Android devices!