What is so fragile that saying its name breaks it?

What has 88 keys?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

The more it dries, the wetter it becomes. Can you tell what it is?

What is at the end of a rainbow?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

I look at you, you look at me, I raise my right, you raise your left. What am I?

You can see it everyday, But cannot touch it at will. What is it?