What is singing twins?

Singing twins are musical performers who are also siblings and share the same genetic makeup. They often have a unique connection and harmonize well together due to their close relationship. Some famous singing twins include Tegan and Sara, Jedward, and Nina Sky. Singing twins may perform various genres of music, including pop, rock, country, and R&B. Many singing twins have gained popularity through talent competitions such as American Idol, The Voice, and X Factor.