Pair avoid introduction to a work (7)

I believe the answer is:

prelude

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'introduction to a work' is the definition.
I can't judge whether this definition defines the answer.

'pair avoid' is the wordplay.
'pair' becomes 'pr' (abbreviation).
'avoid' becomes 'elude' (eluding is a kind of avoiding).
'pr'+'elude'='PRELUDE'

Can you help me to learn more?

(Other definitions for prelude that I've seen before include "Overture" , "Opening piece" , "Preamble" , "Introductory musical piece" , "Introductory passage" .)

I've seen this clue in The Guardian.

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