How do the elements of art relate to the principles of design?

The elements of art are the visual tools that the artist uses to create a composition. These are line, shape, color, value, form, texture, and space. The principles of art represent how the artist uses the elements of art to create an effect and to help convey the artist's intent.

Just like there are principles of design there are principles of art. Principle of design is basically just a different aspect of art

Explanation: Art has existed long before the age of design and it was popularized during the Renascence period. The concept of design didn't come long after and people who made designs basically used the same principles of art.

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."