Clarinetist Artie (4)
I believe the answer is:
shaw
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">clarinetist artie</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 shaw that I've seen before include "G. B. ---; T. E. ---" , "Major Barbara playwright" , "Irish author" , "Man and Superman playwright" , "writer of plays and critical commentaries" .)