I like this:
The Projected Instrument Augmentation system (PIANO) was developed by pianists Katja Rogers and Amrei Röhlig and their colleagues at the University of Ulm in Germany. A screen attached to an electric piano has colourful blocks projected onto it that represent the notes. As the blocks of colour stream down the screen they meet the correct keyboard key at the exact moment that each one should be played.
Florian Schaub, who presented the system last month at the UbiComp conference in Zurich, Switzerland, said that users were impressed by how quickly they could play relatively well, which is hardly surprising given how easily we adapt to most screen interfaces these days.
But while there is real potential for PIANO as a self-guided teaching aid, in my view it’s the potential for a really tight feedback loop that makes this most interesting, and potentially more widely applicable.
When a piano teacher corrects a student’s mistake, they will perhaps specify one or two things that need improving, but this approach would sense each incorrect note and could provide an immediate visual response, flashing red for instance, conditioning the student to success more quickly.
via New Scientist.