Crossword Genius

Ring a girl about Van Morrison song (6)

Ross

I believe the answer is:

gloria

I'm a little stuck... Click here to teach me more about this clue!

'van morrison song' is the definition.
I can't tell whether this definition defines the answer.

'ring a girl about' is the wordplay.
'ring' becomes 'o'.
'about' indicates an anagram.
'o'+'a'+'girl'='oagirl'
'oagirl' is an anagram of 'GLORIA'.

Can you help me to learn more?

(Other definitions for gloria that I've seen before include "-- Gaynor, disco diva" , "sung in church" , "contribution to mass production" , "Portion of Mass" , "Part of the Mass; name" .)

I've seen this clue in The Independent.
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