Groupmuse, a worker- and musician-owned cooperative has reached a major milestone by hosting its 10,000th concert. The majority of Groupmuse’s events take place in non-traditional concert spaces, like living rooms, cafes, distilleries, and backyards. The 10,000th concert was titled, “”Warm your winter with A House Concert.” The concert took place in Portland, Oregon and featured star classical guitarist David Elan {…}