F-Ab-C-F Tuning

 

The tunings book eventually had only 15 tunings as many were very similar, but I have discovered some new ones that have some use. Like open tunings on guitar (Open G, Open A), you can tune a bass to a chord as well, not so much for its ease of fingering, but for the natural harmonics combined with fretted notes. Obviously, the barred natural harmonics at any fret produce a minor triad. 

 

What I like to do with a new tuning is leave it in that tuning for quite a while and see what I can find. There's always some interesting intervalic relationships that you can discover.