Let’s C what Mr. G has to say about A.
Does this mean that there are 8,916,100,448,256 different chords that you’re able to play? Does that mean If you combine all octaves and have for example your base note on different octaves when you play, or is it only including what you can do with one specific octave?
Octaves do not determine the chord, but the note in the base definitely does
A basic chord is primarily made up of 3 tones… the root (or 1st), the 3rd, and the 5th notes in a given scale or key. An Octave (Oct = 8) is the 8th note above a particular note rather than another component of the chord. Octave notes are rather more of a duplication of the particular tone being played - and therefore, do not specifically count as a part of that basic 1-3-5 structure (usually denoted in Roman Numerals (I,III.V).
In fact, Ben has a cool Banjo displaying Roman Numerals on the neck. How cool is THAT?