Acoustically, happiness begin with the voice of our mother when we awaked in her, or from her...
Acoustically speaking, the heart beat music of the mother and our own heart beat correlate with her is the first happy melody...
Acoustically if the doctor smile after using a stethoscope on you all is happiness again...
Acoustically God voice through Nature higher us up when sad...
Musically, sadness may be a hidden pure Joy like a hidden pearl prepared from long time ago....
Then what matter at the end is not sadness, or joy, but the meaning born from them..
For sure illness makes happiness a job to do...
My best wish for health to all ...
I forgot to say to my friend above, sorry some spiders fly....