Crossword Genius

Some singing ’n' dancing originally in Hollywood film (2,2,4)

Ross

I believe the answer is:

la la land

'hollywood film' is the definition.
(2016 film)

'some singing n dancing originally' is the wordplay.
'some singing' becomes 'la la la' (representation of someone singing).
'originally' indicates taking the first letters.
The first letter of 'dancing' is 'd'.
'lalala'+'n'+'d'='LA-LA-LAND'

'in' acts as a link.

(Another definition for la la land that I've seen is " hit film".)

I've seen this clue in The Guardian.
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