Answer:
Round like a dishpan and smaller than a bathtub. But the ocean can't fill it. What is it?
I can ruin your day, or darken your life. And while I'm expected, I'm never alright. I'm bad for business, and worse for your hair. Wherever I am, there's something not there.
According to the music industry, you can count on a midnight train and the devil to turn up here.
I know a word of letters three. Add two, and fewer there will be!
What goes around the world and stays in a corner?
I’m grown from darkness but shine with a pale light. Very round I am and always a lady's delight.