Sax range (4)
I believe the answer is:
alto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sax range</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alto that I've seen before include "Lowest female singing voice" , "Highest male voice: lowest female voice" , "High male singing voice" , "Male singer" , "The highest adult male singing voice" .)