Adaptive audio becomes really interesting when the audio gets behind the wheel and drives the playback environment to behave and/or change in a particular manner. This is commonly referred to as content-driven audio. DirectMusic's sequencer provides notifications that can be used to manipulate the playback environment, allowing for the interesting possibility of music driving gameplay rather than the opposite. For instance, a monster around the corner could wait to jump out at you until an appropriate moment in the score. Content-driven audio is a particularly unexplored area of DirectMusic, one that could be put to some interesting uses.