"How full of grief, of tender, spiritual love, of faith and peace, of the heart's heaven smiling through tears, is this tone-elegy! So should the passion-music close, and not with fugue of praise and triumph like an oratorio. How sweetly, evenly, the harmony flows on,--a broad, rich, deep, pellucid river, swollen as by countless rills from all the loving, bleeding, and believing hearts in a redeemed humanity! How full of a sweet, secret comfort, even triumph, is this heavenly farewell: It is 'the peace which passeth understanding.' 'Rest Thee softly' is the burden of the song. One chorus sings it, and the other echoes 'Softly rest;' then both together swell the strain. Many times as this recurs, not only in the voices, but in the introduction and frequent interludes of the exceedingly full orchestra, which sounds as human as if it too had breath and conscious feeling, you still crave more of it; for it is as if your soul were bathed in new life inexhaustible. No chorus ever sung is surer to enlist the singers' hearts." The Magnificat in D. The Magnificat in D--known as the "Great Magnificat," to distinguish it from the smaller--is considered one of the grandest illustrations of Bach's genius. It was composed for Christmas Day, 1723. Spitta says:-- "The performance of the cantata 'Christen, aetzet diesen Tag,' with its attendant 'Sanctus,' took place during the morning service, and was sung by the first choir in the Nikolaikirche. In the evening the cantata was repeated by the same choir in the Thomaskirche; and after the sermon the Hymn of the Virgin was sung, set in its Latin form, and in an elaborate style. For this purpose Bach wrote his great 'Magnificat.'" For the occasion of this festival he expanded the Biblical text into four vocal numbers; but in describing the work it is only necessary to give it as it is now generally sung.