The Luc Arbogast, a French musician and singer, has a unique talent. Can change the range of his voice with ease so that sings with female vocals. In music terminology is called "counter-tenor", i.e. the male singer with an area corresponding a major mezzo-soprano singer or a ypsifwnoy. Is a rare type, After a man with normal endocrine maturity is impossible to sing in such a pitch, Since the hormones increase the larynx voice making more low during puberty.