Answer:
Density is a word we use to describe how much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its mass). Another way to put it is that density is the amount of mass per unit of volume.
Music is the most abstract of all art forms. It means it is the least related to our real visual or auditory experience. However, composers willingly use imagery to create a link with our particular life experiences, most often in nature. For example, in Smetana's symphonic poem "Vltava", the listener can almost visualize the swirling river. Beethoven's "Symphony No. 6" (also known as "Pastoral Symphony") is also full of natural sounds and harmonies.
