I came across VirtMus recently, the "modern music stand", on the NetBeans Platform:
Its intentions remind me a LOT of Mike Kelly's Chord Maestro, which is also on the NetBeans Platform. Maybe the two should integrate?
Speaking of music, I've been in touch with Winston Dehaney who is creating score notation software, named "Acapella Score", also on the NetBeans Platform:
That's an app that could be integrated with the JFugue Music NotePad at some stage!