As part of my recital in college I did the Allegro Movement from Mozart's Piano Concerto 21 in C Maj. That piece is so beautiful (even when I played it) that I played most of it in tears. He is my all time favorite classical composer. And it's not even a horse race. Beethoven was great as well and comes in at #2, and the darkness of Wagner brings him in at #3. I probably like Wagner because, like me, he never finished anything! LOL!! He completed only one symphony, his Symphony in C Major. WHen he was 19! After that, again much like me, it was all downhill from there...