Standing during songs t.A.T.u. sang (6)
I believe the answer is:
status
'standing' is the definition.
(thesaurus)
'during songs t a t u sang' is the wordplay.
'during' says the answer is hidden in the clue.
'STATUS' is hidden in the letters of 'songs t a t u sang'.
(Other definitions for status that I've seen before include "Class" , "Position in organisation or in society" , "Social or professional standing" , "degree" , "and 9: Existing state of affairs" .)