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Die Schuldigkeit des ersten Gebots

Music by multiple composers · libretto by Ignaz Anton Weiser · premiered 1767

Die Schuldigkeit des ersten Gebots (complete title in historical spelling: Die Schuldigkeit Des ersten und fürnehmsten Gebotes; The Obligation of the First and Foremost Commandment), K. 35, is a sacred musical play (geistliches Singspiel) composed by Wolfgang Amadeus Mozart in 1767 when he was 11 years old. It is Mozart's first opera or, more specifically, sacred drama, as is suggested by the name. The libretto is now attributed to Ignatz Anton von Weiser, although Johann Adam Wieland or Jakob Anton Marianus Wimmer had been suggested earlier. (The title page of the libretto ascribes it only to "J.A.W.".) Only the first part of the opera was composed by Mozart; the second and third parts were contributed by Michael Haydn and Anton Cajetan Adlgasser respectively. However, these other two parts have not survived. Part 1 of the opera was first performed on 12 March 1767, in the Knights' Hall of the Palace of the Archbishop, the Salzburg Residenz. Part 2 was performed on 19 March, and part 3 on 26 March.

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multiple composers is the composer of record for this opera.

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