Crimson Roses: Contemporary American Choral Music Naxos Music CD Musica Viva Choir and Orchestra, Alejandro Hernandez-Valdez, conductor Erin Sensenig, soprano Frederica von Stade, mezzo-soprano   After a lengthy and illustrious career, the mezzo-soprano Frederica von Stade says farewell on Crimson Roses, an album recorded by Musica Viva that includes three contemporary choral pieces. The title work, And Crimson Roses Once Again Be Fair,  composed by Joseph Turrin, features both von Stade and soprano Erin Sensenig. It is a forty-five minute long cantata that commemorates the 100th anniversary of the First World War. Turrin set three poets who were part of the