<p>Dad's voice-it's the one thing he can use to bond with baby when they're in the womb. First they'll hear a familiar sound. Soon they'll recognize it's his voice. And on the day they're born he won't even have to say I'm your Dad. They'll just know.&nbsp;<em>Dad-to-Bump&nbsp;</em>is a beautiful love story for expecting dad to read to baby before they're born and the beginning of a conversation that will last a lifetime.</p>