Musical boy (6)

I believe the answer is:

oliver

I believe this clue is a double definition.

'musical' is the first definition.
(musical based on Oliver Twist)

'boy' is the second definition.

(Other definitions for oliver that I've seen before include "Dickensian role?" , "Chef" , "Character in Dickens" , "Dickens boy named Twist" , "A Cromwell, a Twist" .)

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