A Tip For Young Mothers!
 

Gregorian chant.
It seems to work like a lullabye, only better.
Baby won't take a nap?
Maybe the dear tyke is just throwing stuff and screamin fer tha hell of it.
Gregorian chant.
(Cantus: Trinity Introit)
I'm tellin ya, it's better than ritalin, or what-ever they give em these days.
Plus, I'd bet the patterns boost baby's mental processes in the long run since neural networks wire themselves to encountered complexities.
Just my observations.