Michael Scott brought to London an aopera singer who has won how many Grammy Awards?
Michael Scott (artistic director): Michael Scott is the founder of the London Opera Society. Michael Scott (artistic director):  In his role as the society's sole artistic director, he brought to London Marilyn Horne, Joan Sutherland, and Boris Christoff. Marilyn Horne: Marilyn Horne (born January 16, 1934) is an American mezzo-soprano opera singer. Marilyn Horne:  She has won four Grammy Awards.
four