[boomboomsubban]

I was wondering that myself, as reading the list I suspect it's got something to do with people reporting they experienced the feeling from that song. Too many bands had their most popular song featured, and while it could be that songs that cause frisson are more popular it seems more likely that more people listening to the song makes it more likely to be reported.

If they had some program check some huge library of songs for ones that have some sequence likely to cause frisson I'd expect the playlist to be far different.