Music writer (8)
I believe the answer is:
composer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">music writer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for composer that I've seen before include "A creator of music" , "Room spec (anag.)" , "one to make notes" , "Mozart or Mendellsohn" , "something to lessen anxiety?" .)