Again, more (6)
I believe the answer is:
encore
I believe this clue is a double definition.
'again' is the first definition.
(I've seen this before)
'more' is the second definition.
(as in an audience calling 'encore! encore!')
(Other definitions for encore that I've seen before include "Cry for repeat performance" , "Repetition of performance" , "Call to perform again" , "extra performance" , "Let's hear/see it again!" .)