Good children without airs (5)
I believe the answer is:
songs
'airs' is the definition.
(I've seen this before)
'good children without' is the wordplay.
'good' becomes 'g' (abbreviation).
'children' becomes 'sons' (son is a kind of child).
'without' is an insertion indicator.
'g' going into 'sons' is 'SONGS'.
(Other definitions for songs that I've seen before include "Being 16 [SINGERS] , they would produce these" , "hymns" , "Ditties" , "Words with music" , "Ballads" .)