Work that debuted at the Cairo opera house in 1871 (4)
I believe the answer is:
aida
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">work that debuted at the cairo opera house in 1871</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aida that I've seen before include "eponymous heroine" , "title role" , "Fragrant shrub" , "Egyptian opera by 11 Down" , "She dies with Radams (Verdi)" .)