The audience’s left with great playing in prospect (5,5)
I believe the answer is:
stage right
'the audience's left' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'great playing in prospect' is the wordplay.
'playing' is an anagram indicator.
'in' is an insertion indicator.
'prospect' becomes 'sight' (I can't justify this - if you can you should give a lot more credence to this answer).
'great' is an anagram of 'tager'.
'tager' placed into 'sight' is 'STAGE RIGHT'.
'with' is the link.
Can you help me to learn more?
(Other definitions for stage right that I've seen before include "That's left to the patrons" , "Where player can appear" , "dramatic direction" , "One side of the house" , "One side for actors" .)