Sounding sad and mournful (9)
I believe the answer is:
plaintive
'sounding sad and mournful' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for plaintive that I've seen before include "Maybe weeping" , "Sounding sad and mournful" , "Wistful" , "Doleful" , "Pathetic" .)