Well, now some enterprising and clever geeks have recreated this bit of awesomeness in a smaller, compact form: The Big Trak, Jr. The folks over at Think Geek are great about this sort of thing. And, awesomely, my roommate got one! Mwuahahahahaa!
Went to a children's after-school recital today; in the piano portion the kids were using roll-up keyboards. I remember the episode of Star Trek: The Next Generation where Picard was playing a duet with a pianist who brought a portable roll-up piano, and he was simply amazed at the technology. Futurism is a wonderful thing. My iPhone is a tricorder, and kids are playing on musical instruments from the 23rd century. Fantastic!