High Quality Content by WIKIPEDIA articles! Venanzio Rauzzini (19 December 1746 - 8 April 1810) was an Italian castrato, composer, pianist and singing teacher. As a boy he was a member of the Sistine Chapel Choir and was a pupil of Domenico Corri and Muzio Clementi. He also studied with Giuseppe Santarelli in Rome and Nicola Porpora in Naples.