Angry about southern musical styles (10)

I believe the answer is:

crossovers

'musical styles' is the definition.

'angry about southern' is the wordplay.
'angry' becomes 'cross' (I've seen this before).
'about' becomes 'over' (I've seen this before**).
'southern' becomes 's' (abbreviation).
'cross'+'over'+'s'='CROSSOVERS'

I've seen this clue in The Independent.

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