Mostly common between the 16th to 19th century, a "Castrato" was a male singer who underwent castration before puberty in order to retain a youthful "angelic" singing voice. The singer you're hearing 3 Ways to Sing Vibrato wikiHow AGT's Tom Ball Hit the Longest Note Ever Covering Sam Smith Falsetto: The enduring love affair with the soaring male voice Vance Joy Dates de tourne, Concerts & Billets Songkick I Would Love to Sing Lucia': A Male Soprano Comes Into His Own The New York Times