For the rest of the class we went through the development of a more complex iRTcmix instrument making use of the bus_config() score command (a tutorial on bus_config() is here).
Also included was the use of Interface Builder 'tags' on buttons to pass data in from the interface to an iRTcmix score, as well as review of other interface items (scorefile variables, makeconnection() PFields, etc.) we have been using.