Vocal man gets peaceful (4)
I believe the answer is:
calm
'peaceful' is the definition.
('calm' is associated in meaning with 'peaceful')
'vocal man gets' is the wordplay.
'gets' indicates a hidden word.
'CALM' can be found hidden inside 'vocal man'.
(Other definitions for calm that I've seen before include "Peaceful, tranquil" , "Halcyon" , "Still or peaceful" , "Imperturbable, soothe" , "Composed or free from storms" .)