Is this thing broken?

I have an iPod Shuffle that I've been using lately.  I loaded it with a bunch of music and have been using it in the car as I drive. I think that it's got a bit of a problem though.  About every third song is an Erasure song. The funny this is that there are 206 songs on it and only 33 of them are Erasure.  If my Math is correct, that's only 1/6th of the total songs that are Erasure and yet a full 1/3 of the songs played are.  Strange.