I'm a passionate non-professional musician and I find it extremely helpful to know something more about the pieces I practice. I tried to find musical analyses (formal, rhythmical, melodical) in the internet but it was completely impossible. (I look for analyses of Schubert's first and Rachmaninov's second piano trio.)
Does anybody have some advice where to look for analyses of classical pieces?
EDIT: To clarify: I'm looking for a list of webpages where one can find analyses of many classical pieces.