It's called "The Happy Song" and it was specifically created to make babies happy.
The making of "The Happy Song"
AT A GLANCE
• Researchers know that babies can hear and remember music even while they are still in the womb. And one curious study found that newborn babies prefer Bach to Aerosmith.
• Amazingly most of the parents and 20 out of 26 babies seemed to share a clear preference for one particular melody.
Read more HERE