Answer:
I am the noblest musical instrument
I am known for my natural tuxedo and marching. What am I?
Fashions change, but what can a person wear that is never out of style?
I hold two meanings. With one I may be broken, with the other I hold on. What am I?
I am an object which is used in baseball. During the day I can't be seen at all. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.