Country anthem having line also belonging to pop (4,2,2,7)
I believe the answer is:
land of my fathers
'country anthem' is the definition.
I know nothing about this answer so I can't judge whether this works.
'line also belonging to pop' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'also' becomes 'and' (both can mean in addition).
'belonging to pop' becomes 'of my father's' (belonging to my father or pop).
'l'+'and'+'ofmyfathers'='LAND OF MY FATHERS'
'having' is the link.
Can you help me to learn more?
(Other definitions for land of my fathers that I've seen before include "A number of Welsh" , "National anthem of Wales" .)