Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A musical masterpiece!

This is not only a masterpiece from the musical point of view, but also in regards to the production: two music producers collected bits and pieces of sound from around the world and invited famous artists (Sting, Peter Gabriel, Lou Reed, etc) to compose on top of the melodies. The result is a piece of music that lasts for almost an hour, changing from style to style with combinations that are otherwise rarely heard, like for example African acapella with Brazilian jazz and US rap.Enjoy!