A case for the iPhone

Talking with William Mahrt, CMAA president, he says that his iPhone is made worth it by virtue of his Liber Pro, the Liber Usualis reduced to one application for $14. I completely agree. To have this amazing book at your fingertips is invaluable. The creator did an outstanding job. I would say that it is even easier to use than the real thing: perhaps not to sing with in liturgy but this too would be possible in a pinch. I'm pleased to say that the version used for this app is the one scanned and posted by Musicasacra.com - and there we have the case for open source. One never knows where the next innovation is going to come from.