Write music (7)
I believe the answer is:
compose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">write music</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for compose that I've seen before include "Write a piece of music" , "Settle - score" , "TRITE/WRITE" , "restore calm" , "What Ireland used to do" .)