Lullaby lullabies

Wen is a super curious baby. She is also very curious when she's fast asleep. She'll wake up to the slightest sounds sometimes even whispers might wake her up. My MIL asks me to play soft music for Wen when she's taking her naps. She heard this method over a TV program that it may help the baby to overcome noise sensitivity. This is some kinda music therapy. Try with low volume for a start then slowly increase the volume higher. I've tried twice so far, seems that it's working for her.