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Yodelled and large beasts turned up (4)

Ross

I believe the answer is:

sung

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'yodelled' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Perhaps you can see a link between them that I don't see?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for sung that I've seen before include "Chinese dynasty; uttered melodiously" , "Celebrated dynasty" , "Performed vocally; Chinese dynasty" .)

I've seen this clue in The Sunday Times and The Times.
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