That might be a good idea. There's certainly more that can be done to make keyboards more portable.

There was a keyboard that didn't take off several years ago that was a full size 88-weighted key controller that folded in half. That I would like if it worked and was affordable.

The magnetic key thing worries me though. I can see a kid doing a recital and then having the keys stick to his braces. I see lots of lawsuits.