Crossword Genius

Mock a closing musical piece (4)

Ross

I believe the answer is:

coda

'closing musical piece' is the definition.
(a coda appears at the end of a piece of music)

'mock a' is the wordplay.
'mock' becomes 'cod' (cod can mean false or inauthentic).
'cod'+'a'='CODA'

(Other definitions for coda that I've seen before include "Passage of piece of music added to the end" , "Final part of mus. structure" , "Musical finale" , "noted conclusion" , "Closing stage" .)

I've seen this clue in The Times.
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