PyMusique is an iTunes Music Store interface for Linux. It's possible to sign up for an account, and to preview and purchase songs. So, having some bottle caps from Pepsi informing me that I've won a free song or two, I decided to try it out. It turns out that I can't claim my free songs using PyMusique, but I went ahead and purchased "Dare You to Move" by Switchfoot for a cool dollar. Later I found and purchased the song I was originally after: angelic Charlotte Church's "Carrickfergus", a stunning song that I fell in love with the first time I heard it.