I'm seriously considering getting an iPad Pro with an apple pencil for a few specific use cases. I'm a pianist / teacher so I'm really keen to know: 1) How good is it for using to read sheet music and turning pages? Is there a good app that will allow me to not only read music, but also mark it up with the apple pencil and the markups can be saved, modified, or rubbed out on the fly? 2) Can it be used to create music worksheets? Where I can have music manuscript 'paper' and I can then draw in the music notation bars just like I would on a normal piece of paper? 3) Is there app that would allow me to use the ipad as a whiteboard with everything I draw be recorded live into a video or for streaming? I'd love to be able to create training video content with this for my students! If anyone has similar needs and can comment or advise this would be great!