"Orfeo" composer (10)
I believe the answer is:
monteverdi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">orfeo composer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for monteverdi that I've seen before include "Claudio -, an early composer of operas" , "C Sixteen-Seventeen Italian composer (Orfeo)" , "Italian scorer" , "Claudio --, 16th-17th century Italian composer" , "Composer of "Orpheus"" .)