Dance tango in New Orleans after church (10)
I believe the answer is:
charleston
'dance' is the definition.
(I know that Charleston is a more specific form of the action dance)
'tango in new orleans after church' is the wordplay.
I cannot quite see how this works, but
'tango' could be 't' (phonetic alphabet: alpha, bravo, charlie etc.) and 't' is found in the answer.
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is found in the answer.
'church' could be 'ch' (common abbreviation) and 'ch' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for charleston that I've seen before include "US city - 1920s' dance" , "Nineteen twenties dance" , "Lively 1920s' dance" , "Town of South Carolina which gave its name to a 1920s dance craze" , "American port" .)