Sway to some music (4)
I believe the answer is:
rock
This clue is a double definition.
'sway' is the first definition.
(synonyms)
'some music' is the second definition.
(rock music)
'to' acts as a link.
(Other definitions for rock that I've seen before include "lull baby to sleep?" , "wobble" , "Perhaps Hudson" , "Brighton - (novel); - Hudson" , "Cork (anag.)" .)