Johann Sebastian Bach set this melody several times: as a chorale in BWV 368; and then for organ in BWV 608 as a double canon in his "Orgelbüchlein" and in BWV 729 and BWV 751 as a chorale prelude. Commentators agree, however, that BWV 751 is too simple and undeveloped to be the work of Bach. Bach also used the opening phrase of the melody as a fugal subject for two other choral preludes, BWV 703 ("Gottes Sohn ist kommen") and BWV 724 ("Gott durch deine Güte"). BWV 729, written by Bach to accompany congregational singing in Arnstadt, is traditionally performed as the first organ voluntary at the end of the Festival of Nine Lessons and Carols at King's College, Cambridge. This voluntary was first introduced to the service in 1938 by organ scholar Douglas Guest.