Musical boy one set up for copying (9)

I believe the answer is:

imitative

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'for copying' is the definition.
(I've seen this before)

'musical boy one set up' is the wordplay.
'musical' becomes 'evita' (Andrew Lloyd Webber musical).
'boy one' becomes 'timi' (I can't justify this - if you can you should give a lot more credence to this answer).
'set up' is a reversal indicator (in a down clue, letters go up).
'evita'+'timi'='evitatimi'
'evitatimi' written backwards gives 'IMITATIVE'.

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(Other definitions for imitative that I've seen before include "Copying" , "Mimicking or onomatopoeic" , "Echoing" , "pirated" , "is like an ape" .)

I've seen this clue in The Sun.

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