My personal recommendation is Romance for piano and violin, op. 11, from Dvorak, it's the most beautiful shit ever, I had my first girlfriend thanks to that piece.
Everything about Debussy, you should listen clair de lune, his my personal favourite pianist, the emotion that guy put in his work is beyond anyone else.
Edvard Grieg (butterfly, trolltog, Wedding Day at Troldhauen, and his famous stuff, in the hall of the mountain king and peer gynt).
Liszt(Liebestraum, Hungarian Rhapsody n2, un sospiro).
From Chopin, most of his nocturnes, b-flat minor op. 9 No. 1 specially, and goddamn ballade no. 1 in g minor op. 23.
Camille Saint Saens (Danse Macabre, The carnival of the animals).
Tchakovsky (1812 Overture, sugar plum fairy, his symphony no. 6).
Rachmaninov ( his piano concerto no. 2).
Stravisky (The Rite of Spring, The firebird), this guy is awesome, combine reading a horror book with his music, perfect match.
Gershwin, Rhapsody in Blue.
Listen to those and tell me what you like and I'll recommend you more.