The term 'Ethiopian Slave of Opera' refers to the title character in the 1871 opera 'AIDA' by Giuseppe Verdi. AIDA is an Ethiopian princess who is captured and made a slave in Egypt. The story follows her struggles as she attempts to free herself and her homeland from the oppressive Egyptian rule. The opera has become one of the most popular and beloved operas of all time, and its title character has become an iconic figure in the world of opera.