This is a free "pirate disc" sampler from Barcelona Sonora, a group of professionals in the arts in Spain. They are graphic designers, photographers, web developers, promoters, and t-shirt designers who promote the Creative Commons "paradigm shift" parallel to their commercial work. The complete "gold box set" of the entire pirate disc series (110 tracks) is available through P2P thanks to Barcelona Sonora. Read more about their mission with this disc from the official Barcelona Sonora site (in Spanish).
The selections in this diverse yet fluid compilation can be classified as Alternative Hip-Hop, Big Band/Swing, Dance, Dub, Folk, Latin, Metal, Pop, Rock, and Synth Pop.