Reminder of the golden past? (5)
I believe the answer is:
oldie
'reminder of' is the definition.
The definition suggests a singular noun which matches the answer.
'golden past?' is the wordplay.
I cannot really see how this works, but
'past?' could be 'old' ('old' can be similar in meaning to 'past') and 'old' is present in the answer.
This explanation may well be incorrect...
'the' is the link.
Can you help me to learn more?
(Other definitions for oldie that I've seen before include "pensioner" , "Song of yesteryear" , "Venerable person/thing" , "one who is past it?" , "Senior citizen" .)