the closest i've heard to performance practice being compared to calculus

"Classical pieces have no "original" form. They cannot be represented by the event of any single performance. They are, as I said, ideal objects, approximately realized through repeated performances that may vary widely in some respects but must still respect the limits imposted by the score...In a perfectly literally sense, a classical composition is one that we can listen to repeatedly but never actually hear."

-Lawrence Kramer, from  Why Classical Music Still Matters, pg. 23. 


This sound like a Riemann sum to anyone else?  Maybe I need to stop reading for the day...I could certainly be going crazy...hahahaha.