Foo Fighters' ACL Surprise: Shania Twain Joins for Memorable Performance

Fans are surprised with special guest Shania Twain from Dave Grohl.

Twain performs with the Foo Fighters during "Best of You."

Twain's arrival on a golf cart was revealed by Grohl as he praised her.

Playful moments and crowd participation are featured in the concert.

Grohl stresses how fans can relate to and access rock.

Taylor Hawkins, the late drummer, is honored by Foo Fighters.

Josh Freese, a new drummer, dazzles with a brilliant solo during "Breakout."

By using well-known guitar riffs, Grohl challenges the audience's familiarity.