Random?

I accompanied my sister earlier today, in downtown Chicago, to get her certificate of US citizenship. We have to take the train to get there and, of course, I had my mp3 player to entertain me. I usually put my player on shuffle. But what I noticed within three hours of travel (going to and from the city) is that my player is only playing songs from Pearl Jam, Jimi Hendrix, The Cure, and Radiohead. It was probably just a coincedence . Though it kinda suck that it only played songs from four artists, considering I have 102 artists on my player.