Developing the technique of playing The Am Note is the holy grail of all musical achievement - the pinnacle of centuries of understanding condensed into one short pluck.
First discovered by legendary bass-man 'ThatOrEd'* way back in the late 2000's, this once mythical fretting pattern still proves difficult for others - not only to play - but to simply understand the concept therein.
So powerful a harmonic and melodic tool has The Am Note become, its mere mention in academic circles has become synonymous with those who have reached musical enlightenment and whose company those without 'the knowledge' are not fit to keep.
Either that, or some bit-part bassist with too many basses (and plugins) who possessed an extremely limited understanding of music theory made a boo-boo** in a long forgotten post back in the ol' forum and the rest of us have subsequently never allowed him to forget it ?
* ThatOrEd = Bapu
* * Boo-boo = the French for faux pas