Isolation Network Inc., the parent company of INgrooves, has raised $6.6 million in a second round of funding, according to a Securities and Exchanges Commission filing.

San Francisco-based INgrooves is a digital music and video distribution, marketing, and promotion services company that counts Universal Music Group and MTV as clients. The company also provides sync licensing services for music labels.

Isolation Networks has previously raised funding from Shamrock Capital and brought in a $5 million round in March 2012.