As performed excitedly once again? (6)
I believe the answer is:
encore
'as performed excitedly once again?' is the definition.
I can't judge whether this definition defines the answer.
'excitedly once again?' is the wordplay.
'excitedly' is an anagram indicator.
'again?' becomes 're' (prefix meaning 'again').
'once' anagrammed gives 'enco'.
'enco'+'re'='ENCORE'
Can you help me to learn more?
(Other definitions for encore that I've seen before include "Enthusiastic call" , "We need more" , "Cry from the audience for more" , "Cry for repeat performance" , "Request for repeat performance" .)