The Diatonic Fingerboard - Part 2

The open strings of the guitar are tuned (from low to high);

(6)  P.4th (5)  P.4th (4)  P.4th (3)  Ma3rd (2)  P.4th. (1)   E             A              D             G              B              E

This arrangement of intervals is the result of an evolutionary process intended to enable the guitar to function diatonically. The high and low strings are precisely two octaves apart in pitch when played at the same fret ... The four low strings are tuned to PERFECT 4ths, and the P.4th is also the interval between the two top stings. The split between the 2nd and 3rd strings is a MAJOR 3rd. It would seem that we have an asymmetrical arrangement - but there are hidden symmetries. Discovering the geometrical symmetry of the fretboard should not be put off or saved for advanced study.

Imagine playing the piano without the benefit of the different physical keys for natural tones and enharmonics. Playing piano in the key of C might be a bit more difficult to master. Having physical references or analogs for the tones of an instrument is a big part of finding the note you want, when you want it. The guitar offers certain landmarks, such as FRET MARKERS or dots. Also the special significance of the 12th fret (usually prominently marked) and the open strings. But unless you can connect the fret markings to some logical system of navigation it is difficult to have a true picture of the tones of the diatonic system.