Robert Smithson's Spiral Jetty is an example of a(n) ________, which uses natural materials in its construction.

Puccini got his first break in the opera world

a. by marrying the daughter of a famous impresario. b. while performing at a local bar. c. while touring with a performance of Wagner's Ring cycle. d. while playing and singing portions of his work at a private party.

The most important new structural innovation of the Classical Era (used in Mozart's Symphony no. 40) was the development of __________

a) the fugue b) cyclical form c) sonata form d) call-and-response