About a month ago, I was in the drugstore (a large, upstate NY chain) and suddenly realized I was humming along to a track from Wilco's last album, which had apparently replaced the usual muzak playing over the store's PA system. Later that week, I was in the grocery store and a cut off Spoon's latest album was on. Earlier today, I was in the same grocery store and track from Sufjan Stevens' Illinois was playing.

As you age, the probability of your music coinciding with the ambient sounds of commerce approaches one.