 In opera, many roles originally written for castrati (castrated males) are now sung and recorded by countertenors, as are some trouser roles originally written for female singers.The former category is much more numerous and includes Orfeo in Gluck's "Orfeo ed Euridice" and many Handel roles, such as the name parts in "Giulio Cesare" and "Orlando", and Bertarido in "Rodelinda".Mozart also had castrati roles in his early operas, including Amintas in "Il re pastore" and Cecilio in "Lucio Silla".