Of the 'soap' variety, about royalty? (6)

I believe the answer is:

operas

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'of the' is the definition.
I can't tell whether this defines the answer.

'soap variety about royalty?' is the wordplay.
'variety' indicates an anagram.
'about' is an insertion indicator.
'royalty?' becomes 'er' (abbreviation for Elizabeth Regina).
'soap' anagrammed gives 'opas'.
'opas' enclosing 'er' is 'OPERAS'.

Can you help me to learn more?

(Other definitions for operas that I've seen before include "These shows are a poser, oddly" , "The Magic Flute, Don Giovanni etc" , "Dramatic works set to music" , "La Traviata, Aida" , "Musical dramas" .)

I've seen this clue in the Evening Standard.

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