How many episodes are in the 2014 American documentary about a band who's frontman is Dave Grohl?
Foo Fighters: Sonic Highways: Sonic Highways is a 2014 American documentary miniseries directed by Dave Grohl and written by Mark Monroe. Foo Fighters: Sonic Highways:  Each of the eight episodes is presented as an exploration of the musical history of a different American city through a series of interviews by Grohl.
i don't know