Janet Williams is an American soprano who has won international critical acclaim for performances at the Metropolitan Opera, etc, with conductors including which  internationally recognized solo pianist, chamber music performer, and conductor?
Vladimir Ashkenazy: Vladimir Davidovich Ashkenazy (Russian: Влади́мир Дави́дович Ашкена́зи , "Vladimir Davidovich Ashkenazi"; born 6 July 1937) is an internationally recognized solo pianist, chamber music performer, and conductor.
i don't know