A New Note System
Ludwing Latte · Proceedings of the Musical Association · 1892
The object of this system is, without alteration of the ordinary notes, so to simplify the reading of difficult keys, which, as is well-known, require a practised and experienced eye, that anyone possessing only slight musical skill can easily master them. The system is not complicated; it is, on the contrary, so easy of comprehension that its advantages can be made use of at once.