AIDA, FOR ONE is a term that refers to the title character of the 1871 OPERA by Giuseppe Verdi. ARIA is a type of song or melody in an OPERA, usually sung by a single character. OPERA is a form of musical theatre combining music, acting, and sometimes dance. SOPRANO is the highest female singing voice. NILE is a major river in Africa, running through Egypt. SLAVE is a person who is owned by another person and forced to work without pay. OPERAS is the plural form of OPERA. EGYPT is a country in North Africa, located on the Nile River. ELTON is a British singer-songwriter who has written several operas.