Mac Miller has been keeping busy with his experiments under the Larry Fisherman moniker and free mixtapes like his excellent Faces project. Just recently, the Pittsburgh native took to Twitter to give his fans an update on his third studio album, explaining he put about 2.5 years work into it and scrapped nine different LPs before arriving to this one. This weekend, Mac performed at Grassroots Music Festival at Tom Hanafan River's Edge Park in Council Bluffs, IA, and he shared his new single “100 Grandkids” for the audience. The song also takes lines from Puff Daddy’s “Bad Boy For Life” that serves as a proper salute to "we ain't goin' nowhere." Watch him debut it live above.