Voice below soprano (4)
I believe the answer is:
alto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">voice below soprano</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 alto that I've seen before include "someone to sing" , "Singing voice between tenor and soprano" , "Kind of singing voice, male or female" , "Unisex vocal range" , "Highest male voice: lowest female voice" .)