I think the very last group song should be Time of My Life. Ya know the won that goes:
I've had the time of my life
No, I've never felt this way before
Yes, I swear
It's the truth
And I owe it all to you
I saw them do it on American Idol 2, and it was great. Plus, the lyrics are appropriate, since it would be the last group performance. What do 'yall think?