"When I heard 'Slaughter of the Soul' something changed in me"
Swedish death-metal icons preview "progressive" new album 'The Nightmare of Being'
Debut single "Breaking Point" "fits somewhere between Skid Row and Pantera"
Friends and label mates talk modern metal production, indigenous people, onstage injuries and more
Amok: "I had never heard anything like this raw, brutal and aggressive music"