Vintage song (5)
I believe the answer is:
oldie
'vintage song' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oldie that I've seen before include "one who is past it?" , "pensioner" , "Former song or film that is still well-known" , "no chicken" , "Aged person (colloq.)" .)