ShapeNote

The iPhone app for shape-note singing.

If you don't sing Sacred Harp, you may find some of the information in the app confusing. For code-review purposes, it will suffice to say that it's an a capella singing tradition dating back to the 17th century. The "shape note" system was designed to allow people who weren't necessarily literate to sing from printed music— the corresponding texts would have been familiar to those in the community at the time. While it developed as an intensely religious tradition, in modern practice you will find secular and religious folk singing together. A final point is that there are no leaders; it isn't a "choir" with a director— everyone at the singing who wishes to takes it in turn to choose and lead a song.