I'm a self taught guitarrist and hobby musician who composes original music and who creates transcriptions/arrangements of music from other artists for classical guitar.
I've recently learned about guitar left hand bar (or barre) notation and I've been updating some sheet music I made previously by adding this new-found barre notation.
In one of my guitar arrangements, I came across three consecutive 8th notes in which only natural harmonics on the 12th fret are played using the same left hand finger (finger 3), as shown in the figure below:
I'm not sure if this can or should be notated as a bar/barre, given that we don't actually press the fret with any left hand finger. Can this be notated as a left hand partial bar/barre on the 12th fret (as shown above in the figure)? Or is there a more appropriate notation for a sequence or chord of natural harmonics played on the same fret and with the same left hand finger? If there is, what is it?
Disclaimer: the standard notation and tab on the figure above were done in the sheet/tab editor software Guitar Pro 8, which notates:
(full) bars/barres by writing
B <fret roman numeral>.
partial bars/barres by writing
B <fret roman numeral>(which is the case in the example shown in the figure above).