In September 1791, he was in Prague for the premiere of the opera La Clemenza di Tito, which he was commissioned to produce for the coronation of Leopold II as King of Bohemia.
However, during this time both Wolfgang Amadeus Mozart’s mental and physical health was deteriorating. In September 1791, he was in Prague for the premiere of the opera La Clemenza di Tito, which he was commissioned to produce for the coronation of Leopold II as King of Bohemia. Mozart recovered briefly to conduct the Prague premiere of The Magic Flute, but fell deeper into illness in November and was confined to bed. Constanze and her sister Sophie came to his side to help nurse him back to health, but Mozart was mentally preoccupied with finishing Requiem, and their efforts were in vain.