The ReWire concepts we've discussed in the previous ReWire articles were based on the typical needs of most users -- piping information between Max/MSP and a ReWire host or client application. However, ReWire can also be used to take otherwise upstanding audio applications and use them for unconventional purposes. The key to this is the hostcontrol~ object, which allows a Max patch to exert control over the transport of the ReWire host. Combining this with some common Max techniques can turn the most staid audio app into a subservient audio zombie.