The strain to retrieve the time he had lost was great , and he died of a heart attack at the age of 65 .
Mikhail rehearsed day and night , and after 23 years away from the stage , he began playing again .
The strain to retrieve the time Mikhail had lost was great , and Mikhail died of a heart attack at the age of 65 .
Mikhail rehearsed day and night , and after 23 years away from the stage , he began playing again .