The "R.E.A.D.Y. Tunes" cassette is included as part of a "R.E.A.D.Y. (Read, Educate and Develop Youth) Kit for Infants" distributed in Michigan, and intended for infants under 1 year of age. The kit also contains a video cassette, growth wheel, board book, activity cards, a magnet, and various brochures and information on reading and caring for a child.