Conditional will read out in sylvan setting (4)
I believe the answer is:
wood
'sylvan setting' is the definition.
(sylvan means wooded)
'conditional will read out' is the wordplay.
'conditional will' becomes 'would' (conditional form of the modal verb 'will').
'read out' shows a homophone (sound like).
'would' sounds like 'WOOD'.
'in' acts as a link.
(Other definitions for wood that I've seen before include "Forest - golf club - biased bowl" , "Wind instrument - golf club" , "Grove" , "Old conductor" , "Concert promoter" .)