Some of my old reliables:
Mozart: Lacrimosa
Bach: Air on the G String, Largo ma non tanto, Cello Suite 1
Beethoven: Moonlight Sonata
Debussy: Claire de Lune
Handel: Largo
Chopin: Pretty much take your pick, especially Nocturnes
Liszt: Liebestraume
Schumann: Dreaming
Albinoni: Adagio for Strings and Organ
Delibes: The Flower Duet
Jeff Beck: Cause We've Ended as Lovers
Simon and Garfunkel: Scarborough Fair/Canticle
Greg Allman: Multicolored Lady
Van Morrison: Into the Mystic
Neil Young: Old Man
Stevie Ray Vaughn: Life by the Drop
Alvin Lee: The Bluest Blues
Peter Gabriel: Biko
Beatles: Eleanor Rigby, Yesterday
Lennon: Working Class Hero
Gordon Lightfoot: Circle of Steel
Dylan: It's All Over Now, Baby Blue, Tomorrow is a Long Time, I Shall be Released
Mozart: Lacrimosa
Bach: Air on the G String, Largo ma non tanto, Cello Suite 1
Beethoven: Moonlight Sonata
Debussy: Claire de Lune
Handel: Largo
Chopin: Pretty much take your pick, especially Nocturnes
Liszt: Liebestraume
Schumann: Dreaming
Albinoni: Adagio for Strings and Organ
Delibes: The Flower Duet
Jeff Beck: Cause We've Ended as Lovers
Simon and Garfunkel: Scarborough Fair/Canticle
Greg Allman: Multicolored Lady
Van Morrison: Into the Mystic
Neil Young: Old Man
Stevie Ray Vaughn: Life by the Drop
Alvin Lee: The Bluest Blues
Peter Gabriel: Biko
Beatles: Eleanor Rigby, Yesterday
Lennon: Working Class Hero
Gordon Lightfoot: Circle of Steel
Dylan: It's All Over Now, Baby Blue, Tomorrow is a Long Time, I Shall be Released