Some songs for you to sample from the aural moon library from the previously suggested cds:
IQ - Harvest of Souls
http://www.gep.co.uk/iq/
RPWL - Roses/The Way It Is/Sugar for the Ape
http://www.rpwl.de/
Pendragon - Paintbox (a mossy fav)/As Good as Gold/Guardian of my Soul
http://www.pendragon.mu/
Arena - Opera Fanatica
http://www.verglas.com/ArenaWorld/arenaworld.html
Tangent - The Canterbury Sequence
http://www.thetangent.org/
Pallas - Ghostdancers
http://www.pallas-uk.com/
Jack Foster III - Bohemian Soul/Nirvana in the Notes
http://www.jazzraptor.com/#
Also I'm sure you have both Riverside cds, right? If you don't your missing out on the best band of this decade. Also you do have Marbles - Marillion the best cd of this decade?
If you need more help feel free to write.