Hi Guillermo,
there is a possibility you should know.
I personally use the Software "OpenText", you find it here:
https://psrtutorial.com/MB/opentext.htmlBut it is necessary, to have an additional equipment: an additional screenflat monitor.
After installation of the software on your PC or notebook and other minor prerequisites with the program and your keyboard itself (details in the manual of the SW OpenText) you can link your registration banks with the sheetmusic PDF (or others) you are working and song playing with.
If you activate a registration bank on button 1 the SW Opentext opens the PDF on the screen.
It is a great SW and I am very happy with this solution.
Many Thanks to Michael Bedesem & Etienne Volbragt for their outstanding work for the keyboarder community !!! Great !
Klaus