Crossword Genius

Dances about on air? (6)

Ross

I believe the answer is:

congas

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'dances' is the definition.
(I know this)

'about on air?' is the wordplay.
'about on' becomes 'con' (I am not sure about this - if you are sure you should believe this answer much more).
'air?' becomes 'gas' (air is a kind of gas).
'con'+'gas'='CONGAS'

Can you help me to learn more?

(Another definition for congas that I've seen is " Takes steps".)

I've seen this clue in The Independent.
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