Open up the Box

The Music Genome Project offers Pandora in an effort to help you find music similar to music you already like. The "Guide Us" button is used for various functions, including telling you why certain songs were chosen.

In addition to the "radio" functionality, they have Backstage, that lets you just browse around.

I found the article where I learned out about this thing. The site's not too flashy, so here are some antique radio dials: