Heard again (7)
I believe the answer is:
retried
'heard again' is the definition.
('tried' can be a synonym for 'heard' so perhaps 'retried' is OK for 'heard again')
This is all the clue.
(Other definitions for retried that I've seen before include "Examined in court again" , "had another shot" , "Court-martialled some more" .)