I recently released Cavatina: a smart font for fast musical notation. It’s not a font to install on MuseScore, Sibelius or other scorewriters; it’s a font that works "as a standalone" in simple text editors like TextEdit. Combining text and music notation is just a matter of changing the font. It is great for teaching musical notation to people of all ages, as they don’t have to deal with the overwhelming user interface of a notation program. It is especially useful for saving time in writing many small musical exercises.
Among others, it is possible to write over four octaves of different notes, key and time signatures, barlines, accidentals, articulations as well as ornamentation, providing a system robust enough to allow fast musical composition. Additionally, I have written a converter that translates the text files you write to MIDI and MusicXML: files you could open and keep editing in any other notation program.
Check it out on cavatinafont.com, or directly test it on the quickstart: cavatinafont.com/quickstart