Noting finale, I'll fancy doing the done thing (7,4,4)

I believe the answer is:

falling into line

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'doing the done thing' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'noting finale i'll fancy' is the wordplay.
'fancy' indicates an anagram.
'noting'+'finale'+'ill'='notingfinaleill'
'notingfinaleill' anagrammed gives 'FALLING INTO LINE'.

Can you help me to learn more?

(Other definitions for falling into line that I've seen before include "Finally following instructions" , "joining the queue" .)

I've seen this clue in The Telegraph.

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