Complete songs:
Leningrad - his favorite song for the day
Georgia (Ray Charles)
One for the Road (Frank Sinatra)
Honesty
Piano Man

Incomplete songs and examples:
Your Song (Elton John)
Just the Way You Are
She's got a Way
Beethoven's Third Symphony, 'Eroica'
Purple Haze (Hendrix)
Only the Good Die Young
a new classical piece, inspired by missing his daughter
Famous Last Words
Take Five (Dave Brubeck, Paul Desmond)
Blue Rondo a la Turk (Dave Brubeck)
Mozart Sonata in C  - with variations by Billy
Beethoven's Moonlight Sonata
Saturday Night and I Ain't got Nobody (?)
I Will Always Love You (as performed by Whitney Houston)
Crossroads (Eric Clapton)
Born Under a Bad Sign (Eric Clapton)
Whie Rabbit (Jefferson Airplane)
a blues in C
"Here I am in the airport...the hotel room...,etc."
Ode to Joy