Lionel Bart musical (6)
I believe the answer is:
oliver
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lionel bart musical</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for oliver that I've seen before include "Orphan recruited by criminal gang" , "Dickens boy named Twist" , "Character in Dickens" , "First name of Dickens boy Twist" , "-- Reed, actor" .)