In the world of Racket, software systems consist of interoperating components in different programming languages. These languages may provide the full functionality of Racket, or they may support a domain-specific notation. Naturally, Racketeers construct languages as Racket components and compose them to create new languages. This talk will present the ideas behind Racket: language-specific components, the composition of components, and, most importantly, the rich support for building languages.