Johann Sebastian Bach Was the most popular
The answer is:
In an informal workplace, there are low wages,few benefits, and little hours. But in a formal workplace there are set pay and benefits, stable location, and regular hours.
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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:
Improvisation is when an actor acts without a script and comes up with lines/actions on the spot.
