The greatest treat, however, was to sit with him at the piano and listen to innumerable fragments from half-forgotten beautiful works by Cherubini, Gluck, Bach, Palestrina, Marcello, ' tutti quanti.' It was only enough to mention one of them, whether it was a Gloria from one of Cherubini's Masses or a psalm by Marcello, to hear it played to perfection, until I came to the conclusion that he knew every bar of music ever written, and, what was more, could reproduce it immediately.