Answer:
I am the noblest musical instrument
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
I run through hills. I veer around mountains. I leap over rivers and crawl through the forests. Step out your door to find me. What am I?
Send poorly behaved children to me and let them sit here.
When young I am sweet in the sun. When middle-aged I make you gay. When old I am valued more than ever.
What did the piece of wood say when he saw the screwdriver and screws approaching?