Opera is basically an art form where the singers and musicians come together to perform a drama in a theatre. It was emanated in 16th century in Florence and rapidly reached the rest of the Europe. The words of an opera are known as the libretto meaning ‘little book’. It is not confined to pure singing but the voice in opera is divided into sop raves, tenors, baritones and basses. In the 17th century it was difficult for the opera artists to make a living out of it but as it was evolved commercially during mid-17th century, the professionals came up and produced some of the most notable opera artists in modern history. Here are the top 10 opera artists in modern history.