Song making appearance (3)
I believe the answer is:
air
I believe this clue is a double definition.
'song' is the first definition.
(air can mean a piece of music)
'appearance' is the second definition.
(both can mean an impression or character)
'making' is the link.
(Other definitions for air that I've seen before include "Song; ventilate" , "Atmosphere surrounding us" , "Vital thing" , "Mixture of gases, especially oxygen" , "A number" .)