Giulio Caccini ( born Rome , 8 October 1551 ; died Florence , 10 December 1618 ) , also known as Giulio Romano , was an Italian composer and singer . Giulio Caccini ( 8 October 1551 â `` 10 December 1618 ) , also known as Giulio Romano , was an Italian composer , teacher , singer , instrumentalist and writer of the very late Renaissance and early Baroque eras .