Organised sound (5)
I believe the answer is:
music
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">organised sound</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 music that I've seen before include "A score represents it" , "Strains" , "Melody, harmony" , "melodies" , "Melodious sounds" .)