Blossom with rock band as girl selected annually (3,5)

I believe the answer is:

may queen

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'girl selected annually' is the definition.
I can't tell whether this defines the answer.

'blossom with rock band' is the wordplay.
'blossom' becomes 'may' (I've seen this before).
'with' means one lot of letters go next to another.
'rock band' becomes 'Queen' (British rock band).
'may'+'queen'='MAY QUEEN'

'as' acts as a link.

Can you help me to learn more?

(Other definitions for may queen that I've seen before include "Maiden crowned with flowers in spring" , "festival girl" , "Girl crowned in spring" .)

I've seen this clue in The Guardian.

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