Decorative work produces popular song (5)
I believe the answer is:
inlay
'decorative work' is the definition.
(I've seen this before)
'popular song' is the wordplay.
'popular' becomes 'in'.
'song' becomes 'lay' (lay is a kind of song).
'in'+'lay'='INLAY'
'produces' is the link.
(Other definitions for inlay that I've seen before include "Decoration of a surface by inserting wood, stone or metal" , "Inserted decoration" , "CD booklet" , "Mix images" , "Decorative work" .)