Heavy Metal SLAYER, TESTAMENT, ARCH ENEMY, SCORPIONS Members To Take Part In ‘NAMM Jam’ January 5, 2010 Atomm Leave a comment Revolver magazine will present the “Dean Guitars 2010 NAMM Jam” concert ? featuring COLLECTIVE SOUL, L.A.Source Revolver magazine will present the “Dean Guitars 2010 NAMM Jam” concert ? featuring COLLECTIVE SOUL, L.A.Source