My mom sent this Baby Einstein car seat bar for Adelaide, but she's too little to put it on yet. Will, however, likes it a lot and would play the songs on it. We discovered when he did this, say, during her diaper changes, she would calm down. Come to find out, she LOVES this thing. We're talking cooing, reaching for it, kicking her legs -- it's pretty cool, and Will feels like he's entertaining her when they play with it.