This week on Crossover, a look at the struggles of the oppressed in the 1930s, and the music that helped people thrive despite those struggles. Join us on November 9th at 11:30 am. Our first guest is Dorit Straus, daughter of David Grunschlag, virtuoso violinist and the first concertmaster of the Israel Philharmonic Orchestra. Ms. Straus speaks with Jill about her father and the events that put him in that very important concertmaster's chair. We'll hear two vintage recordings made in 1949 from a radio program in New York on which Mr.