Question: Dave Grohl and Brent Hinds are both what type of artist?
Sentence (from "Brent Hinds"): Brent Hinds (born William Brent Hinds; January 16, 1974) is an American musician best known as a member of the Atlanta, Georgia metal band Mastodon, in which he shares guitar duties with Bill Kelliher and vocal duties with Troy Sanders and Brann Dailor.
Relevant evidence: Yes