Perhaps cursory work for the young (7,5)
I believe the answer is:
nursery rhyme
'work for the young' is the definition.
(a work sung to or by young children)
I don't understand the rest of the clue.
(Other definitions for nursery rhyme that I've seen before include "Young children's verse" , "Traditional children's verse" , "Children's poem" , "Traditional verse for children" , "Jack and Jill, for example" .)