Those Demos that you speak of, are being done all over the place by dealers. Companies such as Generalmusic will bring in an artist to do a clinic/workshop with a concert at the end. This has been an industry standard for years. Unfotunatly of late the attendance to these types of events are not what they use to be (not just Generalmusic demos, but other brands as well). The main reason is, people don't like the sales people there wanting to sell you something after you have been wowed. This is another catch twenty-two for dealers and manufactures to make the effort and expence to put these thing on, they need results to pay for them. I personally love these show, as it is amazing to see the excitment in the room, as an artist really uses an instrument to its limits, where as most use less than 50% of the instrument (this is every brand). But hey, I love infomercials too.