<h3>Answers:</h3><h2>1. (C) Music of changes</h2>
Edgard was a French-born composer who contributed the greater part of his career in the United States. Varèse's music highlights timbre and rhythm. He invented the term "organized sound" in reference to his own musical aesthetic. Varèse's idea of music followed his vision of "sound as living matter" and of "musical space as open rather than bounded". He thought the components of his music in terms of "sound-masses", likening their organization to the natural phenomenon of crystallization.
<h2>2. (C) Brussels World's Fair </h2>
Poème électronique is an 8-minute composition of electronic music by composer Edgard Varèse, written for the Philips Pavilion at the 1958 Brussels World’s Fair. The Philips corporation commissioned Le Corbusier to design the pavilion, which was intended as a showcase of their engineering progress. Le Corbusier came up with the title Poème électronique, saying he desired to produce a "poem in a bottle". Varèse composed the piece with the purpose of creating a liberation between sounds and as a result, uses noises not normally considered "musical" throughout the piece.
<h2>3. (C) independent and contrasting </h2>
Polyrhythm is the simultaneous use of two or more conflicting rhythms, that are not immediately regarded as originating from one another, or as simple indications of the same meter. The rhythmic conflict may be the foundation of an entire piece of music (cross-rhythm) or a momentary disruption.
<h2>4. (B) Sirens</h2>
This was one of his only completely electronic pieces and it represents what he had been striving towards for years- he had been imagining a composition that was made by unconventional means. In a way, it was the conclusion of years of work in his effort to capture sounds and ideas that couldn't be achieved with conventional instruments.
<h2>5. (C) Emo</h2>
Emo is a rock music genre distinguished by an stress on emotional expression, sometimes through confessional lyrics. It appeared as a form of post-hardcore from the mid-1980s hardcore punk movement in Washington, D.C., where it was identified as emotional hardcore or emocore and pioneered by bands such as Rites of Spring and Embrace.