Task: Text Categorization
Input (English): This composer's operatic collaborations with Abbate Giulio Convo include Irene, Il Giustino, and his first opera, Ottavia Restored to the Throne. He wrote two notable masses labeled "Quator Vocum" and "La Stella", or "The Star". His most notable works include a set of thirty didactic keyboard pieces entitled Essercizi. Although his works were catalogued by Giorgio Pestelli and Alessandro Longo, the authoritative version of his works was compiled by Ralph Kirkpatrick, giving them the K. numbers. FTP, name this Italian keyboardist and composer of a set of five hundred fifty-five keyboard sonatas, the son of opera composer Alessandro.
Output (English): Fine Arts