Vigorous piece from Stravinsky (4)

I believe the answer is:

igor

'stravinsky' is the definition.
(as in the composer Igor Stravinsky)

'vigorous piece from' is the wordplay.
'from' says the answer is hidden in the clue.
'IGOR' is hidden in the letters of 'vigorous piece'.

(Other definitions for igor that I've seen before include "Russian man" , "Maybe 8 [SIKORSKY]" , "Card game" , "-- Stravinsky, composer" , "Stravinsky's first name" .)

I've seen this clue in the Evening Standard.

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