This is a great site www.playingforchange.com

About the site:
Playing for Change is a multimedia movement created to inspire, connect, and bring peace to the world through music. The idea for this project arose from a common belief that music has the power to break down boundaries and overcome distances between people. No matter whether people come from different geographic, political, economic, spiritual or ideological backgrounds, music has the universal power to transcend and unite us all as one human race. And with this truth firmly fixed in our minds, we set out to share it with the world.

On the site:
What we need is love – No more war
As we made our way around the world we encountered love and hatred. We met people both rich and poor, black and white, and from innumerable religious groups and ideologies. Over the course of our journey it became very clear that as a human race we need to transcend from the darkness to the light, and that music will be our choice of the future. This Song around the World features musicians who have seen and overcome conflict and hatred with love and perseverance. “We don’t need no more trouble, what we need is love.” The spirit of Bob Marley always lives on.

Stand by Me
Four years ago while walking down the street in Santa Monica, California the Playing for Change crew heard roger Ridley singing “Stand by Me “ from a block away. His voice, soul and passion set us on a journey around the world to add other musicians to his performance. The song transformed Playing for Change from a small group of individuals into a global movement for peace and understanding. This track features over 35 musicians collaborating from all over the world; they have never met in person, but in this case, the music does the talking.