Have you tried BellyBuds for bonding? The BellyBuds Baby Bump Headphones are a unique audio device designed for pregnant mothers to help safely play music, sounds, and voices directly to the womb. These specialized speakers are perfect for prenatal bonding and help in promoting a closer connection with your baby during pregnancy. The BellyBuds adhere gently and securely to the belly, ensuring comfort and sound clarity. They're easy to use, portable, and compatible with most audio devices.