Programming
"I'll make the world as I like it"
1986: Software was expensive, reading the (extensive) manuals was a pain - and finally I found myself in the same situation every time: using what I had learned, I tried to abuse the program to do what it was not intended for. An unsatisfactory situation.
I decided to learn programming - that was pretty hard, too. In 1990/91 I came across MAX, and I couldn't have dreamed it any better.

Customized software for composers and instrumentalists. Finally it is possible to have the computer in the background - and instead just use an iPad as a touch-panel controller on the instrument. "Interfaces" are the key to playability (The interface e.g. for the trumpet consists of the mouthpiece and the valves, for the piano it's keys and pedals.

Keyboards, controllers and MIDI have improved a lot. MPE (a kind of beefed up MIDI) is a blessing and MIDI 2.0 has been announced. Keyboards are now available with real action and usable mini-keyboards no longer belong in the toy realm. With the Roli Rise (and "Keywaves") there is also an excellent new instrument on the market, which is oriented in layout to the piano.