♪ it's called groupmuse. [bach playing] it offers music lovers a chance to enjoy classical chamber music in a creative setting. composer sam botkin say it's the way composers intended their music to be heard. you show up, you socialize for an hour, you sit down on the floor and listen intently as a group for 25 minutes to three movements of a tremendous master work. it's not quite a concert and it's not quite a party. >> reporter: anyone who wants to host a concert can connect with performers and guests who sign up on the groupmuse web site. there's no cover charge. but the hat is passed from nusicians just starting out. juilliard violinist annika jenkins says it's a way to gain