A singer who specializes in or regularly performs in falsetto, a high singing voice produced by vibrating only part of the vocal cords.
From falsetto (Italian, literally 'false little' from Latin falsus) + -ist (person who does something). Someone who sings in the artificial high register.
Falsettists were famously valued in Renaissance Italy and in castrato singers—men trained to sing in unnaturally high voices. The word itself comes from Italian opera tradition.
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