He and his identical twin Richard became a famed classical piano duo, with a focus on the Franz Schubert piano duets.
He and his brother both earned academic degrees from Yale University and made their debut at London's Wigmore Hall.
He and Richard became known for premiering forgotten and obscure duo-piano repertoire, including works by Bartók, Liszt, and Max Bruch.
His parents were Italian immigrants who had already had five children by the time he and his brother were born.
He and Richard studied with Dame Myra Hess for four years. She requested that the duo work to make Schubert's piano duets better known.