Enrico Caruso was an Italian operatic tenor who is considered one of the greatest singers of all time.

Maria Callas was a Greek-American soprano who is considered one of the greatest opera singers of all time.

Luciano Pavarotti was an Italian operatic tenor who was known for his powerful high Cs.

Plácido Domingo is a Spanish operatic tenor who is one of the most successful opera singers of all time.

Joan Sutherland was an Australian soprano who was known for her powerful voice and her interpretations of bel canto operas.

Régine Crespin was a French soprano who was known for her powerful voice and her interpretations of French operas.

Cecilia Bartoli is an Italian mezzo-soprano who is known for her interpretations of bel canto operas.

Anna Netrebko is a Russian soprano who is one of the most successful opera singers of all time.

Song Zuying is a Chinese soprano who is known for her powerful voice and her interpretations of Chinese folk songs.

Sumi Jo is a Korean soprano who is one of the most successful opera singers of all time.

Yma Sumac was a Peruvian soprano who was known for her powerful voice and her interpretations of Andean folk songs.

Leontyne Price was an African-American soprano who was one of the most successful opera singers of all time.

Aretha Franklin was an American singer who was known for her powerful voice and her interpretations of soul music.

Dame Nellie Melba was an Australian soprano who was one of the most successful opera singers of all time.

Luciano Pavarotti was an Italian operatic tenor who was known for his powerful voice and his interpretations of Italian operas.