The Church of the Transfiguration
"The Little Church Around the Corner"
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MUSIC NOTES:
Pentecost - June 3, 2001


Mozart's Missa Brevis in C (K.259), subtitled Orgelsolo-Messe (Organ Solo Mass) is a well-known example of the Mass settings that were common throughout the Austrian Empire in the late 18th century. Some of these compositions were so extended and concertized, that they drew criticism and even legislation from both the Emperor of Austria and the pope. Mozart's Missa Brevis in C conforms to the strictures of length and the limitation of solo passages imposed by the Prince-Archbishop of Salzburg, Mozart's employer for a brief period before his departure for Vienna. Mozart was 19 years old when he composed this Mass, and as might be expected, it is bristling with energy that is not always perfectly placed, as in the lively and aggressive setting of the Kyrie, and in the musically imaginative but liturgically questionable treatment of the threefold reiteration of the word Sanctus. In the customary manner of the period, The Benedictus is given an extended and soloistic treatment. Mozart sets this movement as a quartet with concertante organ accompaniment, and it is this involvement of the organ that gives the work its name Organ Solo Mass. Text and music are sensitively and skillfully united in the Agnus Dei, with its subtle interplay of soloist and choir.

It was common practice in the 18th century for church music to be the medium of instruction for composers, and some remarkable compositions were brought about by this practice. Veni Sancte Spiritus (K.47) is one such piece, composed by Mozart when he was 12 years old, under the tutelage of his father Leopold. The title would suggest that it is a setting of the great Pentecost sequence, but in fact it is a setting of the second versicle of the antiphon that precedes that sequence in the Liturgy of Pentecost Sunday. The piece was originally scored for four-part choir, orchestra and organ, and was probably first performed at the Hapsburg court in Vienna in 1768, during one of many visits to that city (from Salzburg where the Mozarts lived) in which Leopold attempted to secure a royal patronage for his prodigious son. Strangely, such a patronage was never to materialize. The exchanges between solo and full choir, the imitative passagework and the exuberant Alleluia that forms a discrete second part of the composition all attest to the solid grounding the young Amadeus Mozart was given in the choral music of the churches of Salzburg at the time of Leopold Mozart and Michael Haydn.

In 1717, the theorist Johann Mattheson observed that "the most recent Italian solo concertos could be arranged for a single, polyphonic instrument such as the organ or clavier, as a curiosity." It was around this time that Sebastian Bach and his Weimar colleague Johann Walther set their hand to this very practice. The A Minor Concerto (BWV 593) is based on Vivaldi's Concerto for two violins, Opus 3 No. 8. Exploiting the possibilities for contrast inherent in the organ, Bach has deftly simulated the effect of a concerto in his transcription of this festive and lively work, with its sharp contrasts of mood and dynamic.

— David Henry


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