Need song recommendations

[lolaero]

I need a song for something like a graduation. It will go with a slideshow of pictures of friends and stuff, showing all the good times. I would like the lyrics to match with the theme and the song should be slow or kinda slow. I had in mind of Good Riddance by Green Day, but that song is kinda short. I want something like that but a bit longer, maybe close to 4 or 5 minutes.