This chapter has covered a lot of ground. You learned a bit about the nature of sound and music, how synthesis works, and how to record sound. Then you learned about DirectSound and DirectMusic, created a library, and saw a lot of demos. I would have loved to have gone into DirectSound3D, not to mention more advanced DirectMusic, but that's up to you. Now you know everything you need to make a game, and that's the mission for the next chapter!