Where is McGrath of Harlow when you need him?

Kevin always used to point out that just because a note occurred in playing which was outwith the main structure of the main chord, there was no reason whatsoever to actually give it a name. These are passing notes ...they don't require nomenclature...as for "communicating with other musicians on stage " ...gimme a break.

Anybody who ever attempted to go through a Blind Blake song notating the chords accurately would end up in a mental hospital ...you have the base chord and a myriad other notes occurring, but at no point is it necessary or significant to actually give a name to the combination of notes which happens to be played at any given point.