Pachebal Cannon w/ Piano accompanist.
http://www.youtube.com/watch?v=AlAB3mMfbagPhantom of the Opera (I have no idea if they actually have a piece like this O.O)
http://www.youtube.com/watch?v=dSPGqBNf-LYElgar's Cell Concerto (They should have a Violin Version, if not it's pretty to listen to X3)
http://www.youtube.com/watch?v=L5C99JyP2nsI can't think of anything else at the moment, but try looking at Suzuki Method books, they have a lot of solo pieces in there of course, they also sell books with Piano accompanist.
As for percussion, try looking at the Slumdog Millionaire soundtrack, I think it has a lot of drumming to it. But I'm not sure if the music sheets for that is out yet.
Also a popular violin song is Bach's Prelude
http://www.youtube.com/watch?v=4g5Q1p6C7ho&feature=related