Hummingbird – A fresh take on music notation
I think the shapes would make more sense if they represented "do re me" instead of "ABC".  The latter might be helpful to students, but the former is genuinely helpful to singers.  And in fact, it's been done before:<p><a href="http://en.wikipedia.org/wiki/Shape_notes" rel="nofollow">http://en.wikipedia.org/wiki/Shape_notes</a>