For those who can read English and want to start with learning improvisation at the orgen, I found a nice website with lots of downloadable articles: https://www.organimprovisation.net/publications-c1dhp There's also some stuff for those who wanna learn more.... Enjoy!
„Bach ist Anfang und Ende aller Musik, auf ihm ruht und fuszt jeder wahre Fortschritt“ - Max Reger
