THE Foo Fighters have serenaded Scottish fans by playing the unofficial national anthem during a packed gig at Hampden Park in Glasgow. 

Lead singer Dave Grohl stood in awe as Scots joined together to sing Flower of Scotland led by Foo Fighters keyboardist Rami Jaffee. 

Footage posted on YouTube shows thousands of fans singing while Jaffee accompanies them on the keys and Grohl takes a sip from a bottle of Buckfast. 

"Well done, Rami!" shouts Grohl once the song finishes. 

Elsewhere in the show Grohl led the band through a series of their greatest hits including All My Life and My Hero. 

He also brought his daughter Violet on-stage to sing alongside him during the song Show Me How. 

A full review of the show is available here