Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: wouldn't live without it

I played this on my tummy before my son was born, and he seemed to recognize it when he heard it. He can't go to sleep without it. Even when he is having a hard time settling down, ( he is 9 months old), when I start it he turns over and closes his eyes. I do wish it played longer ( I have to re-start it but thank goodness for the remote) and it does eat batteries. But we would have had many sleepless nights without it!