Du Maurier's first and last discs by Paul McCartney's Wings are feeble (6)
I believe the answer is:
droopy
'are feeble' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for droopy that I've seen before include "Lacking strength" , "Inclined to sag" , "Pessimistic, long-eared cartoon dog" , "Cartoon poodle" , "Cartoon dog - sagging" .)