Oh, Sugar!

Main hornline:
(F F# A
F F# A D A G# G
F F# A D
E E E E 
D B D A
G B D)*2
F F# D

During verses and flute solo:
(A A A A
B B A A)*3
A A A A 
B   A

During bridges:
D~B (glissando)
D~B
D~E
G G A

Outro:
A A A B A
G G G A E 
D