[Click here for an introduction to The Greatest Voices Project.] ———————————————— #50: Joan Sutherland We begin our list with one of the clearest female opera voices ever recorded. Joan Sutherland was complimented for nearly every possible type of vocal usage needed to sing opera, and Luciano Pavarotti stated that Sutherland had “the voice of the century.” Sutherland, a native Australian, performed and was acclaimed worldwide during her career. Amazingly, her on-stage performances covered some 38 years of her life. Of course, Sutherland died just last month (October 10, 2010), silencing a unique talent. While it’s hard to select just one song from any of these artists, we will feature a…