Yiddish Theater on PBS
It is no small feat to recreate the world and emotions of a bygone era. But in his astonishing show celebrating his grandparents, Boris and Bessie Thomashefsky, who were superstars of the Yiddish theater, conductor Michael Tilson Thomas has done it. And it is a joy. PBS’s “Great Performances” is broadcasting “The Thomashefskys: Music and…