I have it on the best authority that not only does the technology exist, but it’s being produced and sold. This is no demo.
Don’t let the silly European techno culture distract you from this incredibly glitzy and brilliant piece of computer engineering. It is an intuitive leap forward for the way we view music and music creation (or it will be, anyway, if the price drops). They even have a newer model that’s supposedly more durable and easier to use, for installation in public institutions such as children’s science centers and music/arts learning centers.