I’ve read that an unborn baby seems to be able to listen to a melody through his mother’s belly, and after he’s born he will recognize that familiar melody and feel more at home in his new surroundings.
I decided to experiment with my last baby, and religiously held the Sigikid musical toy my mother-in-law gave me when I was about 7 months pregnant to my belly before going to sleep. My husband was looking at me as if I was insane — which I probably was, given the hormonal overload in my pregnant body!

I never knew for sure if that familiar melody made my son feel more comfortable after he was born, but he did grow very attached to his toy.
I always bring his music toy with me when we’re traveling, and the music (Mozart’s wiegenlied, in our case) always calms him down when he’s upset about new, strange surroundings.

Available in different cute models through Amazon UK or US…

xxx Esther