Song about goodbye/memories?

I am looking for a song to use at our FFA banquet as the seniors hang up their jacket for the last time. It needs to be a sort of sad slow song about saying good bye, memories, and the future. Something like Audio Adrenalines- Goodbye, Brandon Rhyder's Freeze Frame Time would work really good those songs have been used before though. If any body knows anything like that that is not necessarily a popular or common song like by a alternative band or rock band or soemthing like that it would be great thanks! Oh yeah it needs to be parent/ school administration apropriate...