Dance? Tango being performed as Strictly option (10)
I believe the answer is:
charleston
'strictly option' is the definition.
I can't tell whether this definition defines the answer.
'dance? tango being performed' is the wordplay.
'dance?' becomes 'charles' (I am not sure about this - if you are sure you should believe this answer much more).
'tango' becomes 't' (phonetic alphabet: alpha, bravo, charlie etc.).
'being performed' becomes 'on' (I've seen this in other clues).
'charles'+'t'+'on'='CHARLESTON'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for charleston that I've seen before include "Town of South Carolina which gave its name to a 1920s dance craze" , "Dance making" , "American port" , "US city - 1920s' dance" , "Lively 1920s' dance" .)