In Recording Connection audio engineering course lesson 18 you will learn some advanced concepts, acoustics and monitoring. Acoustics is the study of how sound waves behave in an environment. Since you are nearing the end of this course you should be more than ready to handle some more difficult concepts. The science of acoustics could fill several volumes, so we have included those things which are important to your development as a music industry professional. Understanding these concepts and implementing them into your workflow will help you set yourself apart as a music industry professional. In this chapter, we will take a look at acoustics, and more importantly, how the environment in which you are listening affects the sounds you are perceiving.