I'm in the market for something like this, but for sheet music. Something where I can upload PDF copies of music to a reader, annotate them with the stylus, and easily page through the music as part of a performance. I sing choir, so weight is a factor. My Galaxy Tab S8 Ultra is just a tad too heavy.

I read lots of discussions on comparable devices on this post, can anyone recommend something suitable for music?

On android I use MobileSheets which does everything I need.