Windfall, change in the air? (7,4,6)
I believe the answer is:
pennies from heaven
'the air?' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'windfall change' is the wordplay.
I cannot quite understand how this works, but
'change' could be 'pennies' (I've seen this before) and 'pennies' is present in the answer.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for pennies from heaven that I've seen before include "signalling coppers' downfall" , "coppers falling?" , "Change out of blue" , "Song" , "Number" .)