You Don't Have to Let Your baby Cry explains the most effective nurturing method to get your baby to sleep all night. You will learn a step by step nurturing method to teach your baby to want to go to sleep in his or her bed without the constant crying. On the inside cover is a nine song CD recording of his research backed Heartbeat Lullabies that you play during the suggested bedtime routine. You can load the CD to iTunes or your desk top if you want to play it on your smart phone, Mp3 player or tablet. Playing the Heartbeat Lullabies recording quickly calms your fussy, crying, colicky babies, sometimes in just a few seconds. If you are not completely satisfied, the publisher Audio-Therapy Innovations will refund your purchase price, no questions asked. It is estimated that over 20 million people have been calmed themselves or have seen the Heartbeat Lullabies calm infants and children to sleep. - from Amzon