It's very neat to see some musicians (especially those as talented as Rudess is) down in the trenches working on things like this. A few years back, the company I worked for was a sponsor of BT's This Binary Universe tour, and he came in to talk to us about the technology used. He and his team of developers hand-wrote a suite of software for sequencing and editing audio in a native surround sound format. He talked about the C++ used to develop it the same way I've seen so many musicians talk about their guitars. Quite an amazing experience.