Composers, inventors, and artists have experimented with novel acoustic technologies throughout history. In the early twentieth century, composers have devised a variety of ways to build new instruments, from exploring tuning systems and timbre to composing for automatic musical machines. This course examines how composers have utilized acoustic devices and other tools to make entirely new paths of expression in writing electroacoustic works, mixed medium works, and even purely acoustic works since the early twentieth century. This course also takes a close look at the ideologies, aesthetics, and music techniques influenced by technological advancement and considers their cultural and social grounding.