Aaron Chorin
Aaron (Aharon) Chorin, pioneering Reform rabbi, was brought up in Hungary and Prague, where he received a yeshiva education. He studied rabbinic literature, Kabbalah, and general philosophy, and began an unsuccessful business career. Starting his rabbinical career with a position in 1789 in Arad, present-day Romania, he soon proved to be extremely controversial because of his position on a number of halakhic issues. Chorin favored ritualistic innovations such as eliminating Kol Nidre from Yom Kippur services, conducting prayers in the vernacular, and introducing the organ for Sabbath services.