You can read all your music from it. It can also be your tuner and metronome. No more struggling with page turns in the wind. You can watch Modern Family DVDs about harp technique on it in your breaks. Have a look at Barbara's posts for really helpful, informed advice about what applications to download, which music and credit card-reading software to use, how to page turn, practical makes of music stand and possible pitfalls (like sun glare). And - as Barbara says:
"Ironically...all those customers who can’t understand at all why a very expensive instrument needs to be out of the sun are invariably totally cooperative when I say, "But my iPad needs to be in the shade." That they get immediately. I’ve never once had a client refuse to move me to the shade for the sake of the iPad, for all that they’ll always argue and roll their eyes about getting the harp itself out of the sun."
I really, really want an iPad now.