Fly south perhaps to compose ragtime (7)

I believe the answer is:

migrate

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'fly south perhaps' is the definition.
I can't judge whether this defines the answer.

'compose ragtime' is the wordplay.
'compose' indicates an anagram.
'ragtime' anagrammed gives 'MIGRATE'.

'to' acts as a link.

Can you help me to learn more?

(Other definitions for migrate that I've seen before include "move base?" , "Change habitat (seasonally, perhaps)" , "Move from one country to another to settle" , "Ragtime (anag)" , "Move with the seasons" .)

I've seen this clue in the Sydney Morning Herald.

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