Since 2017 at the Opera at the Castle there has been working a children's choir, which comprises children at the age of 7 to 12. Young choristers take part in choir and movement workshops (stage movement, dance, classes on the knowledge of theatre) conducted by instructors associated with the opera: Katarzyna Berowska, who in 2017 prepared the children's choir to the premiere of "Pagliacci" directed by Michał Znaniecki and was the instructor of the children's choir in the seasons 2017/2018, 2018/2019 and Monika Marszałek, a ballet dancer. During classes the young adepts of the music theatre art develop their skills both vocal and physical, learn about the work on stage and take active part in the preparation process for shows. They present the results of the classes by performing in shows next to the artists of the Opera at the Castle.