Loud record's beat (4)
I believe the answer is:
flog
'beat' is the definition.
(I know that flog is a more specific form of the action beat)
'loud record's' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'record' becomes 'log' (log is a kind of record).
'f'+'log'='FLOG'
(Other definitions for flog that I've seen before include "Hit - sell" , "Swing a cat, perhaps" , "Whip severely" , "-- Hitler" , "Scourge, whip" .)