My choices...
Beethoven 9th Symphony
I'll Be Seeing You
Rachmaninoff Piano Concerto #2
The Rite of Spring
Firebird Suite
Corcovado and Desafinado (Stan Getz, Verve Jazz Masters 53: Bossa Nova)
You've Lost That Loving Feeling
And not necessarily in that order. :-)
Holy cow, I left out all the Brahms!
Hey, I love Stravinsky's Firebird Suite!