Attend strike (4)
I believe the answer is:
I believe this clue is a double definition.
'attend' is the first definition.
(to be at an event is to attend it)
'strike' is the second definition.
(I know that strike can be written as beat)
(Other definitions for beat that I've seen before include "Baffle - all in" , "Policeman's route; strike" , "Rhythm, stir vigorously" , "assigned patrol" , "Defeat, strike" .)