Strange bachelor activity in the ballroom (5)

I believe the answer is:

rumba

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'activity in the ballroom' is the definition.
'rumba' can be an answer for 'activity' (rumba is a kind of activity). I am unsure of the 'in the ballroom' bit.

'strange bachelor' is the wordplay.
'strange' becomes 'rum' (similar in meaning).
'bachelor' becomes 'BA' (the qualification: Bachelor of Arts).
'rum'+'ba'='RUMBA'

Can you help me to learn more?

(Other definitions for rumba that I've seen before include "Dance originating in Cuba" , "Ballroom dance of Cuban origin" , "Latin beat" , "What to perform" , "Strictly round" .)

I've seen this clue in The Irish News.

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