It is a sound. A warm sensation.

Different for everyone,

Can be heard differently,

Caused differently. 

It is a cure. A bringer of happiness.

Truly a gift.

A gift that feels warm to receive or 

To give to others.

That's the best feeling. 

To allow someone else to have this cure.

In their darkest times, this cure works.

A confidence builder to be able to give this to someone.

Brought by media or poetry.

Laughter.

Comedy.

The genre that can cure.

Without comedy and laughter; life has no cure.