Sack a priest. Result of wild fun and beat music? (7)

I believe the answer is:

unfrock

I'm a little stuck... Click here to teach me more about this clue!

'sack a priest' is the definition.
'unfrock' can be an answer for 'sack' (thesaurus). I'm not certain of the 'a priest' bit.

'wild fun and beat music?' is the wordplay.
'wild' indicates an anagram.
'and' says to put letters next to each other.
'beat music?' becomes 'rock' (rock music. I am not sure about the 'beat' bit.).
'fun' is an anagram of 'unf'.
'unf'+'rock'='UNFROCK'

'result of' acts as a link.

Can you help me to learn more?

(Other definitions for unfrock that I've seen before include "Deprive (clergyman) of office" , "Take orders from" , "Deprive of ecclesiastic status" , "Dismiss priest from office- remove garment" , "Depose a priest" .)

I've seen this clue in The Globe and Mail.

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