Music for dad? (3)
I believe the answer is:
pop
This clue is a double definition.
'music' is the first definition.
(pop music is a kind of music)
'dad' is the second definition.
('pop' can be a synonym of 'dad')
'for' acts as a link.
(Other definitions for pop that I've seen before include "Palindrome of music for the young" , "Youthful music for dad?" , "Burst - fizzy drink - modern music - US dad" , "Thus goes the weasel in song" , "Youthful music, dad(3)" .)