TIL when Tracy Morgan was unavailable to finish recording the full-length version of "Werewolf Bar Mitzvah" for 30 Rock, Donald Glover stepped in and completed the verses in his impression of Morgan. Glover also voices the 'producer' on the track.

http://www.ew.com/article/2012/04/24/tina-fey-on-30-rock-live-show-donald-glover-and-the-season-finale



Submitted March 20, 2015 at 05:55AM by Pepper-MD http://www.reddit.com/r/todayilearned/comments/2znb3a/til_when_tracy_morgan_was_unavailable_to_finish/