Gal of song (3)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gal of song</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 sal that I've seen before include "Sarah (dim.)" , "girl?" , "- - volatile" .)