An instrumental Shakespearean character? (5)

I believe the answer is:

viola

This clue is a double definition.

'an instrumental' is the first definition.
(I know that viola is instrumental)

'shakespearean character?' is the second definition.
(I've seen this before)

(Other definitions for viola that I've seen before include "String instrument of a range between the violin and cello" , "Pansy genus" , "Twelfth Night heroine" , "Pansy-like plant" , "String quartet member" .)

I've seen this clue in The Times.

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