The premise it to write down a memory (one of any kind) that you've connected with a song. Post the song and how/why it's affiliated with your memory.
Here's a (real) example:
Little Lovers so Polite by Silversun Pickups:
Two summers ago a friend came up to New Jersey for a visit. It was probably tweleve at night, maybe later, and we were driving around aimlessly. She decided that she wanted to see her old apartment and so headed toward the complex. After taking a look we started to leave, when we saw a mutual aquantence of ours. He lived there as well. We called him over to the car and the first thing I noticed was that he was high and the second that he was out of breath. We asked what was up, but he didn't give any straight reply. Then a police car pulled in and drove past us to loop around.
"They're looking for me." He told my friend and I, before telling us that we should go.
As we headed out this song came on and three more cop cars headed into the complex. The overall attitude and some of the lyrics just fit the situation so perfectly, it's almost scary. Both my friend and I commented on it simaltaniously when the song ended.
It was just an odd experience and everytime I hear that song, I can't help but think back to that night.