Biblical mountain Nationalist elevated with the sound of trumpets? (9)

I believe the answer is:

tantarara

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'the sound of trumpets?' is the definition.
I know nothing about this answer so I can't tell whether this works.

'biblical mountain nationalist elevated' is the wordplay.
'biblical mountain' becomes 'ararat' (I've seen this in another clue).
'nationalist' becomes 'nat' (short for nationalist).
'elevated' says the letters should be written in reverse (in a down clue, letters go up).
'ararat'+'nat'='araratnat'
'araratnat' in reverse letter order is 'TANTARARA'.

'with' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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