Reposting with improved quality MP3 file. This recording is direct from Hauptwerk with no reverb added.
Carlos Staszeski (born 1935 in Buenos Aires) studied at the Guilmant Organ School and received dgrees from the Manhattan School of Music. He is organist and choir director at St. Stephen's Episcopal Church in Waretown, New Jersey.
This arrangement is based on the 15th century tune, "Unto us a child is born"