This is a new way of sharing knowledge about music. Do you like music? Then you should give it a try! In their site they explain how, in the last 5 years, Pandora had been adquiring knowledge about which harmony a song follows, or if it is played with major or minor notes. Gender of the band is of course a thing to take into account. You only have to choose your band or song and from it create a ‘radio station’. Since that moment, songs with the same characteristics will play! Of course, you can buy that album in Amazon, or by iTunes directly….Absolutely amazing.