What is the BISAC category to get into Children's Nonfiction?

I have some children books which I wish to be placed into Children & Teens->Children's Nonfiction category in iBookstore, as our competitors have books over there.

However, when I tried to upload our Children Music books, we choose Children Music in iTunes Producer, and ends up in Arts & Entertainment->Music! OK, so when we upload our children books on animls, we tried Education/Preschool & Kindergarten, and we ends up in Professional & Technical->Education!

In all cases, we make sure that our books are specified to be for children only and 3 and up reading age.

I got another batch of children music books that we wanted to upload, can some kind souls please tell us what category to choose in BISAC? Thanks!