Performance expected to finish fast (4)
I believe the answer is:
duet
'performance' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'expected to finish fast' is the wordplay.
'expected' becomes 'due' (similar in meaning).
'to finish' indicates one should take the final letters.
The last letter of 'fast' is 't'.
'due'+'t'='DUET'
Can you help me to learn more?
(Other definitions for duet that I've seen before include "Musical piece for two performers" , "Two singers performing together" , "two share it" , "Work for two performers" , "Two-piece" .)