So there's this first test result from my colleague - who inspired me to start this project.

The result - he slept soundly (he's got insomnia problem too - I only learned that when he told me the outcome) but the baby was still wide awake.

His wife gotta wake him up by beating him with pillow.

My colleague's comment "It's too comfortable to listen to the music. Unfortunately it won't work for the baby"

So the good news is, at least it works for the adult :)