Open source is at home to prepare sounds. You can select only one tip and works. You are having possibility with touch screen or with key. (Your choice)

If you are having time you can come on first performance to me and you will see that this is possible. One touches all works without problem.

I need only collogues who are having experience to help me also. I want only good keyboard.
Once more thanks all for replay on this forum. I thing is really interesting to meet you and listen your side of stories.