Melodies (5)
'melodies' is the definition.
('tune' can be a synonym of 'melody')
This is all the clue.
(Another definition for tunes that I've seen is " Airs, melodies".)
'melodies' is the definition.
('air' can be a synonym of 'melody')
This is the entire clue.
(Other definitions for airs that I've seen before include "Ventilates, say grievance" , "Broadcasts" , "Ventilates, say grievances" , "'Tunes, melodies (4)'" , "Melodies or artificial manners" .)