Illumination Theory by Dream Theater

"Illumination Theory" is a song by the progressive metal/rock band Dream Theater. The song was released on 23 September 2013, as the closing track of the band's 12th album Dream Theater. It features a string ensemble conducted and arranged by Eren Başbuğ. The song's lyrics, according to the guitarist John Petrucci, are about things for which people will live, die or kill. The song's length is 22:17, making it Dream Theater's fifth longest to date. The entire song was released as a 12" picture disc exclusively for Record Store Day 2014 and limited to 2,700 copies.