https://www.headcount.org/

About HeadCount:

HeadCount harnesses the power of music to drive social change. Since 2004, HeadCount has registered nearly 500,000 voters, and helped organize various initiatives in the live music community to promote civic participation. In their role as the organizing arm of the live music scene, HeadCount has hosted activism villages at over 100 concerts & festivals and has raised close to $10 million for other music-industry non-profits. With 20,000 volunteers, street teams in most major U.S. cities and affiliations with over 200 touring musicians, HeadCount ranks as one of the largest and most active music-based non-profit organizations in America.