B.M., M.M., Tel Aviv University. Formerly Principal Cellist of the Israeli Chamber Orchestra. Was awarded the Pablo Casals Prize by the Israel Philharmonic Orchestra in 1970 and won the Concert Artists' Guild Auditions in 1975. Has participated in Heifetz-Piatigorsky masterclasses at the University of Southern California. Gruber has been on the faculty of the Rubin Academy in Tel Aviv and served as a visiting professor at Indiana University. He has participated in the "Musical Spring Festival" in St. Petersburg and the Rostropovich Cello Festival in Riga. Mr. Gruber was on the jury of the 2nd Davidoff International Cello Competition.