What’s earlier than foxtrot in dance choice? (4)

I believe the answer is:

echo

I'm a little stuck... Click here to teach me more about this clue!

'what's earlier than foxtrot' is the definition.
I know that 'foxtrot' relates to this answer.

'in dance choice?' is the wordplay.
'in' indicates a hidden word.
'ECHO' is hidden within 'dance choice'.

Can you help me to learn more?

(Other definitions for echo that I've seen before include "Repetition of sound" , "Reflect in Czechoslovakia" , "Reflection of sound - Greek nymph" , "Parrot" , "call back" .)

I've seen this clue in The Independent.

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