A musical animal fat? (6)

I believe the answer is:

grease

'a musical animal fat?' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for grease that I've seen before include "Lubricate - musical" , "Fat, film" , "Musical starring John Travolta and Olivia Newton-John" , "'Thick, fatty oil (6)'" , "Rock musical" .)

I've seen this clue in The Irish Times.

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