Originally I thought the kids picked their own songs, but from what I understand now, they are "given" songs that the producers and directors feel are suited to their voice.
I think some kids have been given better songs than others and unfortunately it has lost votes for many of the kids who were awesome in the auditions but didn't do as well on voting night.
Also...who the heck is supplying this list of songs? I realize they are instrumental tracks with background vocals on them but Geesh! You would think they could find some more modern material to give the kids.
Just my opinion.