Well according to a lil searching i found this list, its accuracy is unknown but based on just watchin the episode it sure seems like its right on the money.
Episode 6.11 - "My Night to Remember"
Scene: Painful Pratfalls Montage ?? (A Jan Stevens original?) Scene: Odd Moments Montage -- Interrupted "How to Save a Life" by The Fray. Album: 'How to Save a Life' Scene: Odd Moments Montage "She Is" by The Fray. Album: 'How to Save a Life' Scene: Fantasies Montage "Sometimes a Fantasy" by Billy Joel. Album: 'Glass Houses', et al. and
"Candy Man" performed by Sammy Davis Jr. Album: various Scene: Dancing Montage "Diner" by Martin Sexton. Album: 'Black Sheep' Scene: Mean Moments Montage ?? (Another Jan Stevens original?) Scene: Joyful and Heartbreaking Memories Montage "Walking Next to You" by Acres. Album: 'For the Lost and Found' and
"Winter" by Josh Radin. Album: 'We Were Here' & 'First Between 3rd & 4th' EP