Backstage, an actors job board based in New York, has acquired SonicBids, a locally based platform for musicians to connect with promoters. That report comes from The New York Times, which lists the transaction at an estimated $15 million. Writes The Times:

Backstage and Sonicbids serve separate parts of the entertainment world, but they have similar business models, offering users some access free and charging subscriptions for more extensive features. John Amato, the chief executive of Backstage, and Panos Panay, the founder of Sonicbids, said in a joint interview on Tuesday that the combined company would have 600,000 registered users, with 60,000 of them paying subscribers.

My colleague Lauren Landry profiled the company back in August. Founded in 2001, the site has evolved in recent years based on the increasingly social nature of music discovery. Artists pay a $7 monthly subscription fee to access promoters as well as major consumer brands like Red Bull.

The company will retain its name and staff, and will remain in Boston.