Answer:
I run smoother than any rhyme, I love to fall but cannot climb. What am I?
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
I am black and white. I have strings I have keys. I make sound without my lips. I make dough with no flour
I can be heard in a court or carried with you.
I hold two people together but touch only one. What am I?
Brings the sky a lot closer.