We know you're all eager for your babies to sleep through the night and take regular, scheduled naps. Help your baby to fall asleep instantly. If babies are especially fussy or colic, you must to use only this application! You can use this application for your baby or yourself. Babies have just come from an incredibly loud womb. As in as loud as busy city traffic! They are used to loud. And if you know anything about babies, you know they like what they are used to. If you want to set your baby up for the best sleep possible, use the sounds. Voices in: - Heart beat - Vacuum cleaner - Hair dryer (dishwasher) - Washing machine - Rain - Car