abstract:Feodor Ivanovich Chaliapin (Russian: Фёдор Ива́нович Шаля́пин, Fyodor Ivanovich Shalyapin; April 12, 1938) was a Russian opera singer. The possessor of a large, deep and expressive bass voice, he enjoyed an important international career at major opera houses and is often credited with establishing the tradition of naturalistic acting in his chosen art form.