MUSC 214 Theory III Theory III builds upon the previous two levels of analysis with a focus on form. Students expand their understanding of binary and ternary forms. New concepts include analysis of inventions, fugues, sonata, variations, and rondo forms. Popular music and various vocal forms are also explored. Extensive analysis focuses on art music or popular and jazz traditions depending upon the section. Students write in four-parts, explore phrase structure within the context of form and present extensive analysis including written papers and in-class presentations.