I would recommend something bigger. There are several 13.3” e-ink tablets that will allow you to show an A4 sheet of music. There is even a dual 13.3” tablet that has two 13.3” e-ink displays and folds in half.
GVIDO used to make them, but it looks like they shutdown production. According to the redditor there are still some devices available, but they are hard to find. Might not be worth getting one if they are somehow tied to GVIDO's backend servers...
