Portrait of Enrico Caruso.

Enrico Caruso, considered the King of Tenors in his time, was also cheered by Luciano Pavarotti as the best singer in classical music of all times. His work was a milestone in music as being the first recording to reach the mark of 1 million sold copies in the world, with his interpretation of "Vesti la giubba," from the opera "Pagliacci."