"You can play and record music and rhythms on what's essentially an image of a keyboard and various buttons you might find on an electronic keyboard. There's even a turntable which emulates the sound of scratching records.
The kicker of all this is that you can draw all of these applications yourself. I was able to draw a keyboard and drums in my notebook, and play music right on the paper. That's just wild! It all starts with what's called a FlyCon. You draw a FlyCon--usually two letters inside a circle, and then you can browse through menus; the pen will literally talk you through drawing an application. Very cool stuff." - from gearlog
I found a few videos. Nothing spectacular but there's definitely some fun to had there, especially as it's only $80.
Standard MIDI but it proves it really is a notebook.
A kind of paper band.
There's another video of it being used in a more electronic music vein over at gizmodo.com. Gizmodo don't share the embed code for the video so you'll have to follow the link. It's pretty crappy but it shows you can use it to loop proper breaks and trigger samples from the keyboard. It even shows a bit of the ultra craptacular DJ scratchpad. I'm sure you could re-route the control on the scratchpad to something else.... anything else!