Random
The party shuffle feature in iTunes is supposed to create a random playlist of songs. Oh yeah? Then how come, out of 6,435 songs, it manages to choose the exact same song performed by two different bands one after the other?
Update: The question is rhetorical. The fact that coincidences like this occur is in fact proof that the shuffling is truly random. If there were no coincidences, that would be suspicious. The Cederholm-Fugazi effect is another example. It’s just that, as Daniel Gilbert says, we notice things that are memorable and filter out the vast majority.