Missa solemnis (Beethoven)

The Missa solemnis in D major, Op. 123, is a Solemn Mass composed by Ludwig van Beethoven from 1819 to 1823. It was first performed on 7 April 1824 in Saint Petersburg, Russia, under the auspices of Beethoven's patron Prince Nikolai Galitzin; an incomplete performance was given in Vienna on 7 May 1824, when the Kyrie, Credo, and Agnus Dei were conducted by the composer. It is generally considered one of the composer's supreme achievements and, along with Bach's Mass in B minor, one of the most significant Mass settings of the common practice period. 
Written around the same time as his Ninth Symphony, it is Beethoven's second setting of the Mass, after his Mass in C major, Op. 86. The work was dedicated to Archduke Rudolf of Austria, archbishop of Olmütz, Beethoven's foremost patron as well as pupil and friend. The copy presented to Rudolf was inscribed "Von Herzen—Möge es wieder—Zu Herzen gehn!" ("From the heart – may it return to the heart!")
Structure.
Like many masses, Beethoven's Missa solemnis is in five movements:
Analysis:
Scoring and music.
The mass is scored for a quartet of vocal soloists, a substantial chorus, and the full orchestra, and each at times is used in virtuosic, textural, and melodic capacities. The orchestra consists of 2 flutes; 2 oboes, 2 clarinets (in A, C, and B); 2 bassoons; contrabassoon; 4 horns (in D, E, B basso, E, and G); 2 trumpets (D, B, and C); alto, tenor, and bass trombone; timpani; organ continuo; strings (violins I and II, violas, cellos, and basses); soprano, alto, tenor, and bass soloists; and mixed choir.
The writing displays Beethoven's characteristic disregard for the performer, and is in several places both technically and physically exacting, with many sudden changes of dynamic, metre and tempo. This is consistent throughout, starting with the opening Kyrie where the syllables "Ky-ri" are delivered either "forte" or with sforzando, but the final "e" is piano. As noted above, the reprise of the "Et vitam venturi" fugue is particularly taxing, being both subtly different from the previous statements of the theme and counter-theme, and delivered at around twice the speed. The orchestral parts also include many demanding sections, including the violin solo in the "Sanctus" and some of the most demanding work in the repertoire for bassoon and contrabassoon.
A typical performance of the complete work runs 80 to 85 minutes. The difficulty of the piece combined with the requirements for a full orchestra, large chorus, and highly trained soloists, both vocal and instrumental, mean that it is not often performed by amateur or semi-professional ensembles.
Reception.
Some critics have been troubled that, as Theodor W. Adorno put it, "there is something peculiar about the Missa solemnis." In many ways, it is an atypical work, and lacks the sustained thematic development that is one of Beethoven's hallmarks. The fugues at the end of the Gloria and Credo align it with the work of his late period—but his simultaneous interest in the theme and variations form is absent. Instead, the Missa presents a continuous musical narrative, almost without repetition, particularly in the Gloria and Credo, the two longest movements. The style, Adorno has noted, is close to treatment of themes in imitation that one finds in the Flemish masters such as Josquin des Prez and Johannes Ockeghem, but it is unclear whether Beethoven was consciously imitating their techniques to meet the demands of the Mass text. Donald Tovey has connected Beethoven to the earlier tradition in a different way:
Musicologist Michael Spitzer writes, "Gregorian melodies, of course, continued to be used in the Mass throughout the eighteenth century; but by Beethoven's time they were relatively rare, especially in orchestral Masses. The one composer who still used them extensively is Michael Haydn, in his a cappella Masses for Advent and Lent. It is significant that in some of these he limits the borrowed melody to the Incarnatus and expressly labels it 'Corale'. In the Missa dolorum B. M. V. (1762) it is set in the style of a harmonized chorale, in the Missa tempore Qudragesima of 1794 note against note, with the Gregorian melody (Credo IV of the Liber Usualis) appearing in the soprano. I have little doubt that Beethoven knew such works of Michael Haydn, at that time the most popular composer of sacred music in Austria." Similarities between the "Et Incarnatus est" sections from Michael Haydn's "Missa Sancti Gabrielis", MH 17 (1768) and Beethoven's Missa Solemnis can be found.