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Soprano Choir Practice: "Gloria" from Mozart's "Twelfth Mass", (K. Anh. 232 / C1.04.) The "Gloria" was published in the US in 1867 as part of Mozart's "Twelfth Mass", with English translation and accompaniment by Vincent Novello. It gained popularity throughout the Anglophone world when it was included as part of the "World Peace Jubilee and International Music Festival" held in Boston in 1872. But the story behind the "Twelfth Mass" reads like a mystery novel.
Like Mozart's "Requiem", the "Twelfth Mass" is filled with intrigue and mystery which has only added to the popularity of this work. Originally published in 1821 in Bonn Germany by N. Simrock , the "Twelfth Mass" came from a manuscript owned by Carl Zulehner (1770-1841), who lived in Mainz. In 1826, Zulehner was challenged by music scholars to produce Mozart's autographed manuscript. He refused, so it was believed that Zulehner had actually forged it himself. This was the belief for 165 years, until in 1990, music scholars then theorized that it was the work of an Austrian theater composer named Wenzel Müller (1767-1835). But soon, the musical mystery deepened with the discovery of another Wenzel Müller (1736-1794), a violinist, living in Vienna when Mozart did. To cloud the musical research even further, Mozart, needing money, was well known for composing material for others, who would frequently claim it as their own work. The "Mozart Mystery" has continued from 1826 to this day only adding to the power and energy of this piece, with it's moving and inspirational Latin text, 'Gloria in excelsis Deo!'.
