1. When Dream And Day Unite (1989)
2. Images And Words (1992)
3. Awake (1994)
4. A Change of Seasons (EP) (1995)
5. Falling Into Infinity (1997)
6. Metropolis Part 2:Scenes From a Memory (1999)
7. Six Degrees of Inner Turbulence (2002)
8. Train of Thought (2003)
9. Octavarium (2005)
10. Systematic Chaos (2007)
11. Black Clouds & Silver Linings (2009)
12. A Dramatic Turn of Events (2011)
