Landlord in silence turned key (8)
I believe the answer is:
licensee
'landlord' is the definition.
(I've seen this before)
'silence turned key' is the wordplay.
'turned' is an anagram indicator.
'key' becomes 'e' (musical key).
'silence' is an anagram of 'license'.
'license'+'e'='LICENSEE'
'in' is the link.
(Other definitions for licensee that I've seen before include "The one holding official permission" , "One with permit to sell alcoholic drinks" , "One allowed to sell alcohol" , "One permitted to sell alcohol" , "landlord" .)