Graduation Day.

I have to organize an event which is called graduation day and farewell dinner for my seniors ,
As stated above , i really need some suggestions or helps ,
1st Question
What is the most suitable JAPANESE SONG that i can use for tribute to ’em ?
I need some sad song that can make them cry or something (>w<)
2nd Question
Song.. again XD Gomenne , but i need some jazz song that use at the hotel lobby or ballroom , as a background music while they are having their dinner
So far, only these questions for now, hopefully some of you guys can help me out ! Pleasee onegaishimasuuu >.<
Answer #1
BUMMMP
Answer #2
1st Answer:
http://www.youtube.com/watch?v=6UiBAoivy2k
2nd Answer:
http://www.youtube.com/watch?v=ORpl_I4EVZ0
Hope it helps you,
cheers