I have a very difficult baby when it comes to sleeping. I use this app when all else human such as shushing, rocking, and singing fail. This works 99% of the time. The baby immediately quiets and just listens and shes asleep within 10 min. She doesnt care that there are only a handful of lullabies. She just likes the high pitched notes and the arrangements. Works like a charm. Highly recommended.
Tuttette about My baby Music Boxes (Lullaby)