Ruggiero Leoncavallo Ruggiero Leoncavallo作曲 Ruggero Leoncavallopiano Ruggero Leoncavallo,compose Ruggiero Leoncavallo,compose Ruggero Leoncavallo, compose Ruggero Montrasio compose by Ruggero Leoncavallo Se! / R. Leoncavallo composed by Ruggero Leoncavallo