![Metallica headining Sonisphere 2009 at Knebworth House [Picture: PG Brunelli]](/resources/images/290x160/1x/0/15588945.jpg)
More names added to Sonisphere 2014 Knebworth show
A well-known Finnish rock band is to play its only UK show this year at Sonisphere Festival.
A well-known Finnish rock band is to play its only UK show this year at Sonisphere Festival.
