soprano          
noun [ C ]  music specialized uk/səˈprɑː.nəʊ/ us/səˈpræn.oʊ/  sopranos
 女高音歌手;童声女高音歌手
a woman or girl with a voice that can sing the highest notes
  Sopranos Ann Monoyios and Miriam Dubrow sang with beaming, radiant sweetness.
  US (UK treble)童声男高音歌手 
a boy with a voice that sings the highest notes
  The range of his voice changed a lot over his career; he started as a soprano and finished an alto.