If you would have told me 10 years ago that today I would have 4 kids, I would have laughed at you. What would have amused me, even more, would be to hear how we have struggled to sleep train every. single. one of them. I thought with number one I had it all figured out when I stumbled upon a way to get her to sleep on demand at 3 months. Nope. Thing 2 came around and blew that theory right out of the water. Then what worked on 2 didn't work on 3, and so on. I don't have schedules for you, a great revelation of how many months your baby should co-sleep, the best sleep sack (although I could recommend my favorite if you asked!), or how long is too long to 'cry it out'. They may still be sleeping in your bed by the time they're 4. BUT! I do have one little simple trick that may just get that baby to SLEEP, regardless of where they are. The answer? Music. Too easy? Maybe, but it might just change your life.