Expressive, song-like (7)
I believe the answer is:
lyrical
This clue is a double definition.
'expressive' is the first definition.
(I've seen this before)
'song-like' is the second definition.
(I've seen this before)
(Other definitions for lyrical that I've seen before include "Using poetic language, wax thus (7)" , "Highly enthusiastic" , "Song-like, imaginative or expressive" , "We may wax this" , "Relating to song's words" .)