My wife is a classical musician and is tired of managing stacks of music scores on paper. She would like an electronic device that she could place on the stand at the piano or organ and have it display the score. She says there are Bluetooth pedal devices to flip pages.
Music scores are typically PDF files intended for an A4 page. We do have an old 9.7 inch 3:4 device (with Android 4.something) but the screen is somewhat too small for comfortable reading of A4 scores.
I have seen A4 flat devices with pens, intended for artists, but they are quite expensive. Ditto Microsoft Surface. And we don't really need anything powerful, it is just for displaying PDF files. But while there are cheap 15.4 inch laptops, there is no room for the laptop keyboard on the typical stand, and besides, the screen needs to be turned into portrait orientation.
Are there any flat devices that would be near a4 size and cheap? We don't even strictly need it to have touch capabilities.