A red, blue, and white plaid sweater is easily seen as having three distinct colors, even from a distance. The same sweater made with green, blue, and purple fibers might appear at a distance to be a dark blue sweater. Sound waves and light waves behave similarly; they sometimes are distinct and they sometimes fuse together. Give two musical examples of when it would be appropriate for your musical timbres to blend and when it would be better for the composition if they were heard separately