Myron Roberts: Homage to Perotin (Swann)

Myron Roberts, Homage to Perotin, based on 12th century organum, performed by Frederick Swann on the 1964 Möller organ of the National Shrine of the Immaculate Conception, Washington, DC, click here, then click on "Listen to the Program," then hold button and slide to 4:38 (4 minutes and 38 seconds).