I often create PowerPoint presentations with songs (lyrics and musics) to display the presentation onto the wall.
I have a music notation program which I have initialized for an output of A5 landscape (21.5 x 14.85 cm). My virtual printer driver can also print other sizes, but I am not familiar with these print sizes.
Which sizes is the best to fit the whole 16:9 width?

Regards,
Guido