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The American heavy metal band Pentagram performs a live concert at Vulkan Arena in Oslo. Here vocalist Bobby Liebling is seen live on stage. Norway, 11/11 2015 Stock Photo - Alamy
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NORJE 20120608 American heavy metal band Pentagram, performs during the Sweden Rock Festival 2012 in Norje, outside Solvesborg in southern Sweden, on June 8, 2012. Photo: Claudio Bresciani / SCANPIX / code 10090 Stock Photo - Alamy
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