Ballet is a real-world Muggle performance dance characterized by its grace, precision, and highly formalized steps and gestures. Within the Harry Potter narrative, the concept of ballet is used to represent a type of formal activity that a young teenage boy like Harry Potter, influenced by his practical and anti-intellectual upbringing with the Dursleys, would find undesirable or embarrassing. His perception of it as “bad” highlights a typical adolescent awkwardness towards formal dance, divorced from any understanding of it as an art form. This contrasts with the magical context in which its music later appears, suggesting a beauty and sadness that Harry's initial judgment misses.
The concept of ballet appears in two distinct ways within the story, one mundane and one magical:
The term is mentioned on two known occasions in the mid-1990s. The first instance occurs on 25 December 1994, during the Yule Ball at Hogwarts School of Witchcraft and Wizardry. As Harry Potter sat miserably on the sidelines, he lamented his lack of dancing ability and compared the unpleasantness of the situation to ballet. The second mention is in the autumn of 1995. While searching for a suitable place to hold Dumbledore's Army meetings, Dobby the house-elf showed Harry the Room of Requirement. Among the myriad of hidden items within the room was a dusty musical box playing a tune that resembled ballet music.
Though a minor detail, “ballet” serves to flesh out both character and setting in the wizarding world. Firstly, it helps to ground Harry Potter's character. His dismissal of ballet as something “bad” is a realistic trait for a fourteen-year-old boy raised in a non-artistic Muggle environment, adding a layer of authenticity to his adolescent perspective. Secondly, the “ballet-music-like tune” from the musical box in the Room of Requirement transforms the mundane concept into something magical and poignant. It adds to the sense of wonder and hidden history within the room, demonstrating how even elements of Muggle culture can find a strange, new life within the magical world.