Landscape surveyed we hear (5)
I believe the answer is:
scene
'landscape' is the definition.
(I've seen this in another clue)
'surveyed we hear' is the wordplay.
'surveyed' becomes 'seen' (I've seen this in another clue).
'we hear' indicates a 'sounds like' (homophone) clue.
'seen' is a homophone of 'SCENE'.
(Other definitions for scene that I've seen before include "Vista or stage setting" , "Location; outburst" , "Picture" , "Section of a stage work" , "Where things happen" .)