It's all done algorithmically, here's a good blog post about the data: http://musicmachinery.com/2009/12/09/a-rising-star-or/ http://musicmachinery.com/2009/12/

It's all done algorithmically, here's a good blog post about the data: http://musicmachinery.com/2009/12/09/a-rising-star-or/ http://musicmachinery.com/2009/12/09/a-rising-star-or/