Given the over saturation of music in our lives most people associate a song with an event or emotion. We all do this, even if it's a commercial jingle, television theme, or a part of a film soundtrack. Why we as humans do this is something I've yet to understand, but don't really care to.
When I was a wedding photographer I saw scores of first dances and people serenading the couple with their favorite song. Usually it was some top ten hit that was popular for about six months then years later everyone forgot about. What seemed like an exclusive memorable tune for the couple was over saturation to anyone who worked in the industry.
The songs were always the same. They were simple pop or country ballads that weren't steeped in allegory. The lyrics were direct, the orchestration sophomoric, and the beat was slow. Still it worked for the couples and they probably cherish that moment they heard 'our song' at their wedding.
Now I'm one of those couples. Yes we have a song. Amazing how time changes someone. As sappy as it may be, and as much as I loathe the genre that is modern country, it does speak volumes about how I feel about the woman I'm happily going to spend the rest of my days with. I hope to dance to this with her when I'm 80.
"I think it took me a while to convince Nashville that what I do is genuine and my heart's in the right place, and I love country music." - Keith Urban