Mystery of the Lesland swamps (All crafts are good)

One day, the Musician wrote an opera. But how to hear it to the people of Zaitslandia, if they have neither the Opera House, nor the Opera singer, nor the choir, nor the orchestra. The Mayor of Zaitsland instructs the Musician to find everyone to perform the opera. And the Musician goes on the advice of the Watchmaker in the swamps of Lesland. The musician manages to assemble a choir, orchestra and find a charming Opera singer.