Kind of clarinet
I believe the answer is:
alto
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">kind of clarinet</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 "Singing range" , "The highest adult male singing-voice" , "Second of four parts (in singing)" , "Singer's hidden inside chemical toilet" , "Counter-tenor or contralto" .)