A multi-media charity art project, Playing for Change was created in 2004 by producer/engineers Mark Johnson and Enzo Buono. Hoping to break down musical and social barriers and promote a peaceful worldview, the duo traveled around the globe recording street musicians playing the same songs with the idea of creating a pastiche of the recordings
http://www.youtube.com/artist/Playing_for_Change?feature=watch_video_title

Sweet music with an unusual mix of world instrumentation.–artbobo