While “regular” may seem a misnomer (term via Regular tuning - Wikipedia) I’m curious this community’s experiences with tunings with the same interval between each set of strings.
(forgive my lack of theory knowledge ahead) After playing each of the following 3 tunings for a whopping total of maybe an hour, I’m curious what mechanical / mental advantages could be gained from these. My goals on guitar are just to play along to my favorite songs (which are 99% of the time extreme metal riffs/solos), so of course using a different fingering may be strange - but I mention this as FYI that I’m not really into acoustic chord voicing, etc.
It seems the most common of these 3 is tuning 5 semitones apart (seen called “perfect fourths” or just “fourths”) and of course standard tuning is very close to this. Troy has a video that touches on this: Tuning In Fourths — Efficiency Boost Or Creative Challenge? Feat. Wim Den Herder - YouTube . You can find quite a few videos / discussions on this online. (E,A,D,G,C,F) An advantage I noticed while playing was ability to mimic fingerings of “stuff written on lower strings of standard tuned 7-string” on a 6-string (by one more string higher).
Less common than that, tuning 4 semitones apart (“major third” or “M3”) has mentions online. One interesting version would be using a 7-string, so that you get back to range of standard tuning (E,G#,C,E,G#,C,E). I enjoyed the ability to go “straight up/down” chromatically by assigning 4 fingers to 4 frets. The “power chord” spacing of 3 frets vs 2 felt strange, but getting the octave “above vertically” 3 strings above was cool (ala dropped tunings).
Least common (although monsters like Shawn Lane and Ron Jarzombek have apparently used it) is tuning 6 semitones apart (“augmented fourth” or “diminished fifth”). With repeating octaves (B,F,B,F,B,F) you get some interesting options “vertically” but it seemed like more work “horizontally”. Perhaps that would lead to fewer string changes on riffs in tighter intervals; not sure if it’s worth it. Some of the string skipping and arpeggios are pretty fun in this one especially.
Thoughts? While most discussions online about tunings are about creativity, would you expect any of these to mechanically improve / challenge your playing ability?