Hearing range in rehearsal (5,3)
I believe the answer is:
trial run
'rehearsal' is the definition.
(I've seen this before)
'hearing range' is the wordplay.
'hearing' becomes 'trial' (I've seen this before).
'range' becomes 'run' (synonyms).
'trial'+'run'='TRIAL RUN'
'in' is the link.
(Other definitions for trial run that I've seen before include "Pilot" , "Experimental outing" , "Test mission" , "Turn rail around in practical test" , "'Preliminary test of how something works (5,3)'" .)