This precedes foxtrot in the choreography (4)

I believe the answer is:

echo

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'this precedes foxtrot' is the definition.
The definition suggests a singular noun which matches the answer. I also know that 'foxtrot' relates to this answer.

'in the choreography' is the wordplay.
'in' indicates a hidden word.
'ECHO' is hidden within 'the choreography'.

Can you help me to learn more?

(Other definitions for echo that I've seen before include "Reflected radar beam" , "Repetition of sound" , "Trace call" , "Audio effect" , "Reiterate" .)

I've seen this clue in The Telegraph.

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