Heavy Metal SIGH: ‘Prelude To The Oracle’ Video Released January 12, 2010 Atomm Leave a comment “Prelude To The Oracle”, the new video from the Japanese extreme-metal group SIGH, can be viewed at RevolverMag.com.Source “Prelude To The Oracle”, the new video from the Japanese extreme-metal group SIGH, can be viewed at RevolverMag.com.Source