METAL fans at next week's Sonisphere rock festival at Knebworth will be able to mosh to the sounds of Dancing Queen, Waterloo and Mamma Mia! Event organisers this week surprisingly announced that Bj�rn Again will take to the stage on Saturday to deliver a

METAL fans at next week's Sonisphere rock festival at Knebworth will be able to mosh to the sounds of Dancing Queen, Waterloo and Mamma Mia!

Event organisers this week surprisingly announced that Bj�rn Again will take to the stage on Saturday to deliver a set of ABBA songs - in a hard rock/heavy metal style!

And what's more, Agnetha Falstart, Benny Anderwear, Frida Longstokin and Bj�rn Volvo-us won't just be feeding the crowd ABBA classics on a bill also including the likes of nu-metal favs Linkin Park, Coheed and Cambria, Bullet for My Valentine and Heaven & Hell, a group that is basically heavy metal godfathers Black Sabbath minus Ozzy Osbourne.

For as part of the encore, Bj�rn Again - a satirical show which parodies ABBA - will pay its respect to Sunday night headliners Metallica by performing one song selected by the sonispherefestivals.com board users.

Confirming next month's Knebworth date, creator and founder Rod Stephen said: "Bj�rn Again is appearing at Sonisphere.