Proportion. Proportion refers to the relative size and scale of the various elements in a design. The issue is the relationship between objects, or parts, of a whole. This means that it is necessary to discuss proportion in terms of the context or standard used to determine proportions.
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.
The answer is 77 years old, since the sisters are 3 years apart.
This description is finger painting on a paper hoped I helped