Who founded Singing for Change?

Can you tell me more about the origins of Singing for Change? Who exactly were the individuals or organizations behind its founding? Was it a single individual with a vision, or was it a collective effort from a group of passionate people? I'm particularly interested in understanding the motivation and inspiration behind the creation of this organization, and how it has evolved over time to become what it is today. Additionally, if there are any notable achievements or milestones that have occurred since its inception, I would love to hear about them as well.