IMO the two best tracks to demo or test any system

Celine Dion - Its All Coming Back To Me
Led Zeppelin - In My Time of Dying

Both songs can give you a great understanding of any system your listening to, or building or wanting to build.

May examples are from Celine Dion's greatest hits on CD, I would like to use the original album, I find Greatest Hits can be compressed more to fit more songs on the CD as apposed to the original release. Led Zeppelin Physical Graffiti Classic Records pressing.

Just my thoughts I wanted to share with my fellow nut cases :)

Peace Kev