Vocal style in musical with moving ending (4)

I believe the answer is:

scat

'vocal style' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

(Other definitions for scat that I've seen before include "Wordless jazz singing" , "it's dropped by 21 [SNAKES]" , "vocal style?" , "Animal droppings - small silvery fish" , "Jazz singing - animal droppings - silvery fish" .)

I've seen this clue in The Times.

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