This chapter was all about audio effects. With over 20 effects in Audacity, we've got a lot to choose from. So we spent the entire chapter reviewing each of the pre-installed effects. We spent a great deal of time discussing how to access and use all of the available effects, and why you might use each of them. This chapter is to be used as a future reference for all of the various effects that Audacity has ready for you, while also getting you ready for the next chapter, in which we will discuss all of the plug-ins, or additions, that you can install with Audacity in order to give you even more effect options.