Attention to something corny? (3)
I believe the answer is:
ear
I believe this is a double definition.
'attention' is the first definition.
(having someone's ear is having their attention)
'something corny?' is the second definition.
(as in an ear of corn)
'to' acts as a link.
(Other definitions for ear that I've seen before include "Place for a plug" , "Listener in the cornfield" , "Part of corn plant" , "Seed-bearing part of wheat" , "Heed" .)