Virtual world Doppelganger has expanded it's Music Lounge artist-branded music environment into a much broader virtual music experience called vSide.

The vSide environment is about three times larger than the Music Lounge, allowing members to explore the space with their avatars to visit multiple virtual stores, clubs and private listening parties. It also adds more social networking opportunities for members.

Downtown Records is the latest label to use the service as a promotional vehicle for bands. The company has not yet named which artists will be involved. Interscope Records is an existing partner.

An $11 million investment round led by ComVentures funded the expansion.