Though today most millennials probably think of chamber music as a sleepy genre far from appropriate for a house party, chamber music is the original house party soundtrack, and Groupmuse is a service devoted to helping young people rediscover it.
Chamber music -- or music composed for a small group of stringed instruments and sometimes the piano -- takes its name from its history as music for house parties. It is called chamber music because it was played in small rooms, or chambers, within aristocrats' houses. Today, the genre is more often played in concert halls, but Groupmuse is a service that hires out young performers to take chamber music back to people's chambers.
With Groupmuse, millennials can book chamber musicians to play in their apartments. Since the genre was specifically invented for such a purpose, the service makes perfect sense.