Louis Armstrong nickname (7)
I believe the answer is:
satchmo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">louis armstrong nickname</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 satchmo that I've seen before include "trumpeter" , "Name used by jazz player Louis Armstrong" , "Jazz musician" , "Louis Armstrong's byname" , "Louis Armstrong's nickname" .)