It is really not clear who chooses the songs for the kids.
When a singer sings an average difficulty song, the judges comments one way and when the kid sings a difficult song judges again comments another way.
I have a proposal to solve this issue.
Judges should choose all the songs of equal difficulties and put them in a jar.
All singer should pick up from the jar like a lottery. Then judges can not complain about difficulty level any more. The songs should be choosen 2 ot 3 days ahead of time to give them equal practice time.
What do you think?