Dance note (3,4)
I believe the answer is:
get down
I believe this clue is a double definition.
'dance' is the first definition.
(get down can mean to dance or party)
'note' is the second definition.
(get down on paper)
(Other definitions for get down that I've seen before include "See feathers, > alight" , "Swallow" , "Dismount, alight" , "you could - from duck" .)