It's proving very handy for all my chant needs on trains. Trains are the place where I learn music.
Also great is that you can download a score from The interweb as a PDF, stick it in iBooks and then listen to the music on iTunes, if you like. Very handy indeed. When I was a student locating a score and a recording of quite a lot of stuff was hard, so this is a marvellous.
The instrumental teachers at work say that boys are now downloading music and putting the iPad on piano music stands to practise. Quite cool.