King, perhaps, writing payment for Queen? (7)
I believe the answer is:
royalty
I believe this is a double definition.
'king' is the first definition.
(thesaurus)
'writing payment for queen?' is the second definition.
(the band Queen get royalties for writing songs)
'perhaps' acts as a link.
(Other definitions for royalty that I've seen before include "Queens, emperors, etc" , "Author's perquisite" , "Sovereign rule" , "Payment for use of work" , "Regal status" .)