Answer:
In many hall ways you would stand if not with me in hand.
I run smoother than any rhyme I love to fall but cannot climb.
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
My voice is tender my waist is slender and I'm often invited to play. Yet wherever I go I must take my bow or else I have nothing to say.
I am rarely touched but often held. If you are smart you'll use me well. What am I?
The profession of Jimi Hendrix and Eric Clapton