An opera singer, often referred to as a DIVA, is a professional vocalist who performs in operatic productions. Opera singers are trained to sing in a wide range of styles and techniques, including bel canto, coloratura, and dramatic soprano. They must also be able to act and move on stage, as well as have a strong understanding of the musical score. Opera singers typically perform in large theaters or opera houses, and may also appear in smaller venues such as cabarets or nightclubs.