The more i’m pressed, the more I shine, what am I both hard and fine?

I am a musical instrument whose name starts with a tricky letter, and I make sounds when you strike my wooden bars with sticks. There are bars that are big and small across me.

With a spin and a whirl, off it flew, But don't you fret, it'll come back to you. Like tales old Nan told 'round the fire, Returnin' loyal, never to tire.

All roads led to me Except they favor Rome Without me food is bland I’m what you sprinkle on life

Buried deep where ages lie, I watched the countless years go by. No breath I take, no voice I own, for now I’m cast in hardened stone.