Have you heard of Playing for Change? It's a project that was started in 2004 with the goal to "inspire, connect, and bring peace to the world through music". The creators of the project traveled around the world to places such as New Orleans, Barcelona, South Africa, India, Nepal, the Middle East and Ireland. Using a mobile recording equipment, they recorded local musicians performing the same song, interpreted into their own style. A CD was released last year, as well as a documentary entitled Peace Through Music. I haven't seen the documentary yet, but I just stumbled upon these videos on YouTube and I love them. I hope you do too!
Also, if you want to find out more about them, it appears that "playingforchange.com" can harm your computer. Their real address is www.playingforpeace.org