That’s how it works when it comes to clay
It's pronounced "ensemble" by the way. And, one way that a pianist would have a role would be by being in the background as an example and playing his part. He's going to play what he needs to play. The question does seem a little to vague, but truly, I would say simply, that the person who is playing it, just plays his part as they all make music sound good.
Answer:
The first one is the treble clef and the second one is the bass clef
Frank Llyod Wright was a well known architect of the Arts and Crafts Movement
The first type of jazz was afro blue.