Introducing… the “Eigenharp”
From the official site…
A professional level instrument which allows the musician to play and improvise using a limitless range of sounds with virtuoso skill. The unique design of the keys makes this the most expressive electronic musical instrument ever made. The Alpha can play and record loops, change scale and key, transpose, alter tempo, program beats, create arrangements, switch and layer multiple sounds, all while the musician is performing live on stage.
I believe this will run an interested musician approx $4,000 U.S. thus making it the most expensive electronic instrument currently on the market. However, there’s also a smaller, cheaper version called the “Pico” that doesn’t include so many options.
And here’s an excellent BBC article with a video of someone showing the reporter how to use it, and also it being used in the context of a band
Bonus video: Pico performance!