Two of the craziest experiences I've had on stage were the two witchpolice radio Big Mix-Up events I participated in. Sam decided to gather a group of musicians from an array of different genres onto the Park Theatre stage and have them make music on the spot. Before every improvisation, the audience would call out a genre and topic to perform about.
Below is a Winnipeg Music Project interview with Sam explaining his idea for the first event (and some info on his involvement in the local music scene, etc.)
Here is a link to the witchpolice live recording of each event and some video that was taken of some of the on-the-spot jam magic that happened those nights!