Mass in C minor, K. 427/417a (Schmitt) Cover Image

Mass in C minor, K. 427/417a (Schmitt): Mass, Orchestra Accompaniment, Organ Part

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Mass in C minor, K. 427/417a (Schmitt) Cover Image
Mass in C minor, K. 427/417a (Schmitt): Mass, Orchestra Accompaniment, Organ Part

Mass in C minor, K. 427/417a (Schmitt): Mass, Orchestra Accompaniment, Organ Part

By Wolfgang Amadeus Mozart, ed./arr. by Alois Schmitt

Item: 36-A269947
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Description
Wolfgang Amadeus Mozart (1756-1791) began composition of his Great Mass in C minor, K. 427/417a in 1782 as a promise to himself to write a major work for his native Salzburg. This period was shortly after he had moved to Vienna in 1781, and Mozart wrote in a letter that he made the promise before having married Constanze, a decision which his father Leopold disapproved, though he only really began the work after the marriage, completing all that he did in 1783. The work remained uncompleted from the sense of a liturgical mass, missing some of the Credo movements, all of the Agnus Dei, and parts of the Sanctus and the Benedictus, and Mozart called it a "half a mass" in a letter to his father. Despite this, all that was completed was performed at a liturgical mass on October 23, 1783, at St. Peter's Church in Salzburg during Mozart and Constanze's three-month sojourn there to introduce Constanze to the family. It is believed that Mozart borrowed from other works to make it complete for a liturgical performance, and it is thought likely that Constanze sang the high first soprano solo part. The work remained in this state until German musicologist Alois Schmitt's work to complete the mass was published in 1902. The Schmitt edition became the standard edition throughout the 20th century. Instrumentation: 2.2.2.2: 2.2.4(1st sub Tpt in C).0: Timp: Org: Str (4-4-3-3-3 in set): Solo SSTB: Mx Chor.

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Additional Details
Series: Kalmus Choral Library
Publisher: Keiser Productions, Inc.
ISBN10: 8-89-270081-2
ISBN13: 979-8-89-270081-8
UPC: 659359845611
SKU: 36-A269947
Instrumentation: 2.2.2.2: 2.2.4(1st sub Tpt in C).0: Timp: Org: Str (4-4-3-3-3 in set): Solo SSTB: Mx Chor

More about this title

About the Composer: Wolfgang Amadeus Mozart

Wolfgang Amadeus Mozart (1756-1791) composed across every major genre during his brief life, producing 626 documented works that established foundational models for Classical form and orchestration. His output ranged from symphonies and concertos to chamber music and operas, all marked by melodic invention, harmonic sophistication, and structural clarity that continue to define instrumental and vocal writing in music education.

Mozart's sacred music occupies a central place in his catalogue. He wrote Requiem masses, motets, and liturgical works throughout his career, responding to commissions and personal artistic impulses. The Great Mass in C minor represents his ambition to create a substantial sacred work for Salzburg, his birthplace, combining the architectural grandeur of Classical form with the devotional intensity that characterizes his most significant choral compositions.

Why we love this

This is substantial Mozart for choral and orchestral forces, offering the stylistic authority and musical weight that serious programs require. Alois Schmitt's completion and orchestration of the organ part give modern ensembles access to a work that reflects Mozart's late compositional voice while remaining performable with standard resources.

What to expect

The work moves between moments of intimate lyricism and grand proclamation, with the solo voices frequently emerging from or dissolving back into the full chorus. Mozart's orchestration creates a sense of ceremonial dignity while maintaining the transparency and grace characteristic of his mature style; the organ part weaves through the texture, anchoring harmony and lending warmth to full choral passages.

Who it's for

Experienced choral directors and orchestra conductors with access to a capable mixed chorus, soloists, and full orchestra including brass and timpani. This work suits university choral programs, professional choral ensembles, and advanced high school programs capable of managing Mozart's harmonic language and the technical demands of both the vocal and orchestral writing.

How to get the most out of it

  • Balance the solo quartet (SSTB) carefully in relation to the mixed chorus; these voices often carry thematic material that should project clearly over orchestral texture.
  • Work the organ and orchestra accompaniment together from early rehearsals to establish unified phrasing and harmonic support, especially in passages where the organ doubles or bridges string writing.
  • Shape the Kyrie and Gloria sections with attention to Mozart's counterpoint; clarity in voice leading depends on precise articulation in both chorus and orchestra.
  • Reserve time to coordinate the trombone parts (in the Sanctus and other sections) with the choral entrances, as these often double or reinforce key harmonic anchors.

How to use it

Program this as a concert centerpiece or the core of a liturgical service during the Advent or Easter season. Pair it with shorter Mozart sacred works or complementary Classical-era masses to create a focused exploration of his choral writing, or position it alongside other major choral works in a season devoted to sacred repertoire.

Skills your students will build

  • Sustaining long vocal lines through changes in harmonic rhythm and orchestral density
  • Balancing solo and choral voices in eighteenth-century sacred idiom
  • Reading and performing Mozart's counterpoint in both fast and slow movements
  • Coordinating ensemble rhythm across organ, orchestra, and chorus in works with independent accompaniment parts
  • Interpreting period-appropriate ornamentation and articulation in Classical sacred style

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