Terrence McNally's play "MASTER CLASS" is a touching and witty story about an artist's calling, creative fulfillment, and the price of excellence. The performance centers on the legendary opera singer Maria Callas, who, after concluding her stage career, passes on her experience to the new generation. During master classes, she recalls her turbulent life, triumphs, and unhappy love. Directed by and starring Sonora Vaice, this production invites the audience to become participants in the master class, revealing the bright and dark sides of the opera world. Humor intertwines with deep emotional revelations about talent, discipline, loneliness, and the immortality of art. It is a story about a personality who dedicated her entire life to art, whose demanding nature conceals both vulnerability and an inexhaustible love for music.