Describe how Guillaume de Machaut's Notre Dame Mass reflects the aesthetics of the ars nova.

The time signature of a composition is often dictated by the accent pattern

While fragileworks of art might be best preserved in a locked box, museums routinely display such objects. why do museum professionals feel it is important to share these artifacts?

What is the stele of hammurabi (above)? how did it come to exist? what is its significance?