Crossword Genius

Frantically knock up a bit of reggae music (4,4)

Ross

I believe the answer is:

punk rock

'music' is the definition.

'frantically knock up a bit of reggae' is the wordplay.
'frantically' indicates anagramming the letters (I've seen this in other clues).
'a bit of' indicates taking the first letters.
The initial letter of 'reggae' is 'r'.
'knock'+'up'+'r'='knockupr'
'knockupr' anagrammed gives 'PUNK ROCK'.

(Another definition for punk rock that I've seen is " Aggressive style of music in late 1970s".)

I've seen this clue in The Independent.
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