Burlesque act - parties set to be enlivened (10)
I believe the answer is:
striptease
'burlesque' is the definition.
(thesaurus)
'parties set to be enlivened' is the wordplay.
'to be enlivened' indicates an anagram (letters energised or enlivened into movement).
'parties'+'set'='partiesset'
'partiesset' anagrammed gives 'STRIPTEASE'.
'act' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for striptease that I've seen before include "Form of entertainment" , "Erotic performance" , "Revelatory performance" , "in which all will be revealed" , "Sort of entertainment" .)