By this point you have encountered some pretty heavy material. You should feel proud of what you've accomplished. There are only a few more basic items that you need to investigate in order to be truly ready for the musical world as a bassist. In this chapter you'll receive some additional tools and theory that you'll need if you want to convincingly play jazz, Latin, and more advanced styles of rock and pop. Ultimately, this material will help you develop greater command of your instrument and music in general.