Rockers Slipknot have been dragged into a murder trial, that commenced last Thursday, after prosecutors discovered the band's "Disasterpiece" was used to fire up a California woman before she agreed to help her boyfriend stab a pal to death.

Amber Rose Riley is accused of helping Jason Harris kill 22-year-old Terry Taylor in 2003.

Jurors in San Bernardino Superior Court heard Taylor was stabbed more than 20 times, and his neck was slashed in the brutal attack, orchestrated by Harris, who was sentenced to serve 50 years to life behind bars in August.

Deputy District Attorney Karen Khim told the court that Riley and her boyfriend listened to Slipknot's song, which features lyrics about slitting a victim's throat, before they attacked Taylor in a park. The couple also allegedly recited the lyrics as they stabbed their friend to death.

Harris reportedly told San Bernardino police detectives that he wanted to know what it was like to kill someone and Khim told the jury that Riley admitted to having "a fascination about what it would be like to see a dead body".

It's not the first time Slipknot has been in hot water over a death, in January a fan died at one of their shows in Iowa.

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(This news article provided by World Entertainment News Network)