Popular genre providing national anthem? (7,5)
I believe the answer is:
country music
'popular genre' is the definition.
(genre of popular music)
'national anthem?' is the wordplay.
'national' becomes 'country' (I am not sure about this - if you are sure you should believe this answer much more).
'anthem?' becomes 'music' (anthem is a kind of music).
'country'+'music'='COUNTRY MUSIC'
'providing' acts as a link.
(Other definitions for country music that I've seen before include "Dolly Parton's genre?" , "Emmylou Harris' genre" .)