I have an interest in hymnals published as e-books. I have found several apps but they only have lyrics, not music. I would like it if I could find songs that are readable on a phone or a tablet, since letter-size pdfs are often hard to navigate on a phone. Something like a powerpoint slide but navigatable from a phone, and also licensed for sharing in that way. This would allow congregations to read music during services without having to have the music projected on the screen. Does anyone know if this kind of thing exists? I would be willing to contact a publisher and take this on as a project if they are open to it, but I don't want to duplicate work.