Loud street outside zone in distant territory (3,4)
I believe the answer is:
far east
'distant territory' is the definition.
(region of Asia)
'loud street outside zone' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'street' becomes 'st' (abbreviation).
'outside' is an insertion indicator.
'zone' becomes 'area' (I've seen this before).
'f'+'st'='fst'
'fst' going around 'area' is 'FAR EAST'.
'in' acts as a link.
(Other definitions for far east that I've seen before include "China, Japan and other remote Asian countries" , "remotest Siberia, perhaps" , "distant lands" , "The Orient" , "Region containing Japan" .)