From the event listing:

Rock the Mic for Bikes with Bike Works! Come karaoke with us on the acclaimed stage at the Columbia City Theater to raise money to make bicycling accessible and affordable to the Seattle community. Karaoke starts at 9:30pm, but show up early to sign up for tunes and mingle in the Bourban Bar at the theater. $10 Suggested donation includes one raffle ticket. Prizes will also be given for best performances.

All proceeds will benefit Bike Works. Bike Works, a non-profit located in Columbia City, uses the bicycle as a tool for youth empowerment and community engagement, and making bicycles accessible and affordable to people from all walks of life.