My principal is retiring. What is a good song for our choir to sing at her retiring party?

What's an appropriate song for this occasion? Preferably, we want a song more on the sad side.

Public Comments

1. "Old Friend" by Stephen Sondheim is sweet...lends itself well to part singing...
2. "For Good" from Wicked is absolutely amazing. It's a great duet that my choir sings.
3. School's Out by Alice Cooper j/k Places I Remember by The Beatles is a classic
4. There is a choral arrangement by Jay Althouse called "May Our Paths Meet Again". This is a great song, and our seniors sang it for our school's graduation. If you were to go on jwpepper.com or alfredmusic.com I'm sure you could find the arrangement. It's a short song, but it's sweet and to the point. :)