Crossword Genius

Party game Annie possibly presides over (7,6)

Ross

I believe the answer is:

musical chairs

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'party game' is the definition.
(I've seen this before)

'annie possibly presides over' is the wordplay.
'annie possibly' becomes 'musical' (I can't explain this - if you can you should believe this answer much more).
'presides over' becomes 'chairs' (I've seen this in another clue).
'musical'+'chairs'='MUSICAL CHAIRS'

Can you help me to learn more?

(Other definitions for musical chairs that I've seen before include "in which one's in danger of losing one's seat" , "Children's party game" , "Contest" , "at the end, there's no score" , "Party activity" .)

I've seen this clue in The Telegraph.
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