As a singer, I could have done this all night (6)
I believe the answer is:
danced
'done this all night' is the definition.
The answer and definition can be both to do with creating things as well as being past participle verbs.
Maybe there's an association between them I don't understand?
'as a singer i could' is the wordplay.
I cannot quite see how this works, but
'a' could be 'an' and 'an' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'have' is the link.
Can you help me to learn more?
(Other definitions for danced that I've seen before include "Moved to music" , "Tripped the light fantastic" .)