"Tosca" or "Turandot"
I believe the answer is:
opera
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tosca or turandot</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that Tosca is a Opera)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for opera that I've seen before include "Eg, Il trovatore" , "Musical dramatic work" , "Musical stage work" , "works in Latin" , "Dramatic genre" .)