Mournful verse (5)
I believe the answer is:
elegy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mournful verse</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for elegy that I've seen before include "Mournful song or poem" , "Lines written by poet" , "Song of mourning" , "Mournful work" , "Plaintive poem" .)