Harry’s track an old song (5,3)
I believe the answer is:
hound dog
'an old song' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'harry's track' is the wordplay.
'harry' becomes 'hound' (both can mean to harass).
'track' becomes 'dog' (synonyms).
'hound'+'dog'='HOUND DOG'
Can you help me to learn more?
(Other definitions for hound dog that I've seen before include "Elvis song" , "Writing desk" .)