Song from dreadful egoists, maybe (2,4,4,2)
I believe the answer is:
as time goes by
'song' is the definition.
(I've seen this before)
'dreadful egoists maybe' is the wordplay.
'dreadful' indicates an anagram.
'egoists'+'maybe'='egoistsmaybe'
'egoistsmaybe' is an anagram of 'AS TIME GOES BY'.
'from' is the link.
(Other definitions for as time goes by that I've seen before include "through the years?" , "Play it, Sam. Play - (Casablanca)" , "Song you must remember" .)