Composer of the Brandenburg Concertos (4)
I believe the answer is:
bach
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">composer of the brandenburg concertos</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 bach that I've seen before include "German organist and composer, d. 1750" , "JS --, baroque composer" , "musical great" , "J. S. --, baroque composer" , "endearing Welsh appellation" .)