Like a breezy tune? (4)
I believe the answer is:
airy
'like a breezy' is the definition.
I can't tell whether this definition defines the answer.
'tune?' is the wordplay.
I cannot quite understand how this works, but
'tune?' could be 'air' ('air' can be a synonym of 'tune') and 'air' is found in the answer.
A single letter 'y' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for airy that I've seen before include "Lacking substance" , "Light and spacious" , "Well-ventilated; delicate" , "Light and insubstantial" , "(Of ideas) speculative" .)