Low-toned (4)
I believe the answer is:
bass
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">low-toned</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 bass that I've seen before include "Freshwater fish and lowest voice" , "Low singing voice" , "Fish (which sings?)" , "Fish; deep voice" , "part of score" .)