Liking a swan song (8)
I believe the answer is:
penchant
'liking' is the definition.
(penchant is a kind of liking)
'a swan song' is the wordplay.
'a swan' becomes 'pen' (pen is a kind of swan).
'song' becomes 'chant' (I've seen this before).
'pen'+'chant'='PENCHANT'
(Other definitions for penchant that I've seen before include "Inclination; taste" , "Partiality" , "Disposition" , "Strong liking, inclination" , "Willingness" .)