also: ヴォイストレーナー
noun
vocal coach; voice trainer
A professional who trains singers or speakers in vocal technique. Wasei-eigo from English 'voice trainer'; the natural English equivalent is 'vocal coach'.
wasei-eigo (Japanese-coined English), from voice trainer
彼女はプロの歌手になるためにボイストレーナーに師事している。
She is studying under a vocal coach to become a professional singer.
ボイストレーナーの指
My voice improved dramatically with guidance from a voice trainer.