Jesus Christus, unser Heiland (Jesus Christ, our Saviour), a communion hymn, has a text of Hussite origin, Jesus Christus, nostra salus, translated into German by Luther, with a thirteenth century melody. A derivative of the chorale appears first in the tenor, over a lower part still played on the manuals, followed by the melody in the alto, and the unadorned opening notes on the pedals. The second version is in compound time, with the chorale in the upper part, with a continuing texture for manuals only, with a final tonic pedal-note to add dignity to the closing measures.
Komm, Gott, Schopfer, Heiliger Geist (Come, God, Creator, Holy Ghost) is for full organ with pedal obligato. The chorale is taken from the Gregorian chant Veni, Creator Spiritus. In 12/8 metre, the melody is heard in the upper voice, before a brief contrapuntal episode leads to its re-appearance in augmented form in the pedals.
The canonic variations on Vom Himmel hoch (From Heaven on high) were apparently written in 1747 and offered by Bach when he was admitted to the polymath Lorenz Christoph Mizler von Kolof's Correspondierenden Societät der Musicalischen Wissenschaften (Corresponding Society of the Musical Sciences). Bach was the fourteenth of a membership limited to twenty scholars and musicians, including, among those now better remembered, Telemann and Handel. The Christmas chorale by Martin Luther first appears in the pedal part of a Canon at the Octave that involves the two upper parts in such canonic imitation. The cantus firmus is again heard in the pedals, in the second Canon at the Fifth, followed by the chorale melody itself in canon at the sixth and in inversion in the lower voice, accompanied by a moving pedal part. Once the chorale has been heard in this form, Bachadds a canon at the third, with the upper part entering first with an inversion of the melody. A canon at the second follows, between the pedal bass and tenor in inversion, and then, at the ninth, between a pedal inversion and the top voice. This varied treatment of the cantus firmus itself leads to a Canon at the Seventh between the pedals and tenor. A Canon in Augmentation sets an augmented tenor part in canon with a more rapid upper part, with the steadier chorale melody introduced by the pedals. The Canonic Variations constitute a remarkable technical and musical tour de force.
Vor deinen Thron tret ich (Before Thy throne I stand), based on a sixteenth century melody by Loys Bourgeois, is incomplete in the Leipzig Autograph, where it appears, in any case, in another hand, perhaps dictated at a time when Bach had lost his sight. This is, in any case, a reworking of Wenn wir in höchsten Nöten sein (When we are in greatest need), in which an introductory contrapuntal passage leads to the appearance of the chorale melody in the upper part, a procedure that is followed throughout. The words now chosen seem appropriate enough in these closing years of Bach's life.
Wolfgang Rübsam
A native of Germany, Wolfgang Rübsam received his musical training in Europe from Erich Ackermann, Helmut Walcha and Marie-Claire Alain and in the United States from Robert T. Anderson. Living today in the Chicago area, he has held a professorship at Northwestern University since 1974, and since 1981 has served as University Organist at the University of Chicago. International recognition was established in 1973 when he won the Grand Prix de Chartres, Interpretation, and has grown through his recording career, with over eighty recordings, many of which have received awards. Wolfgang Rübsam performs frequently in major international festivals and concert halls, including the Los Angeles Bach Festival; Wiener Festwochen, Vienna; Lahti International Organ Festival, Finland; Royal Festival Hall, London; Alice Tully Hall, New York, and conducts master classes both in interpretation of early and romantic organ repertoire, and in interpreting the keyboard music of Johann Sebastian Bach on the modern piano.