Rock fans principal fireworks (11)

I believe the answer is:

headbangers

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

'principal fireworks' is the wordplay.
'principal' becomes 'head' (synonyms).
'fireworks' becomes 'bangers' (banger is a kind of firework).
'head'+'bangers'='HEADBANGERS'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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