Jun’ichi Kanemaru on Twitter:
It is thanks to Mr. Takumi Ao, who is a voice trainer of music therapy in which I am taking the private lessons for more than 10 years already, that I am able to keep this voice [of mine]. I am grateful of him. “You have kept your high voice range without change as before, and your low voice range has also expanded considerably, you know,” he told me. I wonder if perseverance is power, like weight training, undoubtedly.