A supergroup is a musical performing group whose members have successful solo careers, are members of other groups, or are well known in other musical professions. The term can sometimes also be applied to a group that has no specific preferred genre. The term is usually used in the context of rock and pop music, but it has occasionally been applied to other musical genres. For example, The Three Tenors—composed of opera superstars José Carreras, Plácido Domingo, and Luciano Pavarotti—have been called a supergroup.