Parts 'Borrowed' For Symphony X Songs

What pieces of music do Symphony X take excerpts from to use in their own music? I know of Wolfgang Amadeus Mozarts Requiem being used in Death of Balance, I also recognise the introduction to Masquerade from somewhere but I can't remember the name (if anyone could tell me I'd appreciate it).
What is your favourite incorporation?
 
"Romeo and Pinella wrote the introduction to Masquerade."

I wonder why I feel I recognise it. :erk:


"One of the main riffs to "Damnation Game" is taken from a Carl Phillip Emanuel Bach piece titled "Solfeggietto." It's in C minor. Find the sheet music in .pdf format here."

Wow thanks :)