Some songs ideas that bring back memories or good times.
"... The nights were young, we though that they would last forever, but nothing ever does, so we'll just have to remember Though time slips by, the memories remain I could never forget, when the nights were young ..." - Firehouse (When The Nights Were Young)
Any song that you listened to during those good times will bring back many great memories....music is a very powerful tool.
Some good songs that bring good memories back are I Feel Lucky by Mary Chapin Carpenter, I Cross My Hear by George Strait and Remember by Alan Jackson. Generally, old songs are known to bring back memories of good times you have had.
"Reasons" by Earth, Wind, and Fire.
"I wanna be the very best, that no one ever was" Pokemon