Speaking from a music composition point of view, the ability to simply write a note on "paper" is huge. There's a big difference between sitting at a piano with a tablet that you write on and a laptop with a keyboard and mouse. Even with a custom "music keyboard" getting the nuance of written music through digital input is slow, difficult and frustrating. For years we've been able to hook a keyboard into composition software, but writing in dynamics and other notation meant clicking through menus and sub-menus in crowded, tedious interfaces.

The ability to write as you think/feel it and have the computer handle digitization is a big step, and hopefully allows composers to just write, without working around their software's limitations.