A must have if you are also getting the Kids' Hymnal because you most likely won't know all of the contemporary songs in the Kids' Hymnal. And if you can't read music (like me) then you'll definitely want the CDs. One thing about the recordings on the CDs, the tempo is a bit fast I think, but over-all, well done. Children's voices, not adult voices.
We bought this CD over a year ago and our children really enjoy it. It is a great CD to have in the van. My kids really like hearing children sing the songs and they are learning lyrics that are wonderful to hear around the house. What a joy to hear your child sing, "If you have faith as small as a mustard seed!" What truth!