Look at the central panel of the Portinari Altarpiece by Hugo van der Goes. In this painting, Van der Goes relies heavily on?

Nstrumental music that supports the main part(s) chamber music 2. a large group of instruments usually including woodwinds, brass, and percussion band 3. music written for small ensembles for an intimate setting accompaniment 4. a person who leads an ensemble conductor 5. an electronic keyboard capable of multiple instrument sounds