Par LAURIDSEN MORTEN. O Come, Let Us Sing Unto The Lord was written for Stephen Layton and Polyphony by Morten Lauridsen. Purchase the sheet music for unaccompanied SATB chorus. This setting has been recorded on Lauridsen: Nocturnes (Hyperion, CDA 67580). In speaking of Lauridsen in his book Choral Music in the Twentieth Century, the author Nick Strimple says of him, 'he is the only American compo…