Mothers who've had children killed by gun violence partner with Chicago Symphony Orchestra musicians to create songs that keep the memory of their children alive.

After his mom died, Fry Bread author Kevin Maillard found himself wondering, "but where did she go?" So he wrote about it. His new kids' book is And They Walk On, illustrated by Rafael López.

Readers are invited to listen to the brief audio at the beginning of this piece. The layered voices are intended ...