NAMPA/IDAHO – JULY 2: Singer Johan Hegg growls in the mic at the Rockstar Mayhem Festival in Nampa, Idaho July 2nd 2013.

NAMPA/IDAHO – JULY 2: Singer Johan Hegg growls in the mic at the Rockstar Mayhem Festival in Nampa, Idaho July 2nd 2013.

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NAMPA/IDAHO – JULY 2: Singer Johan Hegg from Amon Amarth performs on stage at the Rockstar Mayhem Festival in Nampa, Idaho July 2nd 2013.

NAMPA/IDAHO – JULY 2: Singer Johan Hegg from Amon Amarth performs on stage at the Rockstar Mayhem Festival in Nampa, Idaho July 2nd 2013.

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NAMPA/IDAHO – JULY 2: Olavi Mikkonen hands plays his guitar at the Rockstar Uproar Festival on July 2nd, 2013 in Nampa, Idaho

NAMPA/IDAHO – JULY 2: Olavi Mikkonen hands plays his guitar at the Rockstar Uproar Festival on July 2nd, 2013 in Nampa, Idaho

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NAMPA, IDAHO – JULY 2: Ted Lundstr?m from the death metal band Amon Amarth at the Rockstar Mayhem Festival in Nampa, Idaho July 2, 2013
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