I remember when I was about 12years old maybe, I was dreaming about something like this, which would allow using 2 positions - up and down, compared to the almo

I remember when I was about 12years old maybe, I was dreaming about something like this, which would allow using 2 positions - up and down, compared to the almost straight base position - of our fingers for input. I was learning to play the recorder at that time; I think that's sparked my thought process.