Answer:
I am black and white. I have strings I have keys. I make sound without my lips. I make dough with no flour
My days are numbered.
I am clean when Iβm black dirty when Iβm white.
By Moon or by Sun, I shall be found. Yet, if there's no light around, I am undone. What am I?
What happens once in June twice in August and never in May?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?