"It was he who impressed, time and again, the necessity of singing as nature intended, and - I remember - he constantly warned, don't let the public know that you work. So I went slowly. I never forced the voice."
Warned
"It was he who impressed, time and again, the necessity of singing as nature intended, and - I remember - he constantly warned, don't let the public know that you work. So I went slowly. I never forced the voice."