Before Queensrÿche’s ‘Anarchy-X’ became the killer opening track on ‘Operation: Mindcrime‘ (1988), it almost became another song on their previous release.
METAL SHOP listener James Kocher in Micanopy, Florida discovered this YouTube gem (view below), a track written for the ‘Rage for Order‘ (1986) album, but never actually released.
According to Wikipedia, Queensrÿche wrote and recorded at least three complete songs 
that did not make the final ‘Rage’ track list, but are available on various demos. ‘From the Darkside’ is a slow atmospheric piece with lyrics and concepts later revisited for ‘Mindcrime’. ‘The Dream’ is a fast heavy metal tune and the unreleased title track ‘Rage for Order’ also has elements that ended up on ‘Mindcrime’, mainly the intro which became ‘Anarchy-X’ and some lyrical concepts. The song ‘Rage for Order’ was played live during the tour promoting this album and is available on bootleg audio and video.