B and F Chord Forms?
A common question is ‘why is there not a B or F shape?’ The quick answer is that there are, if you want there to be. It all depends on how technical we are about it. This is interesting to think through [and we can learn a great deal about chords], yet we really just want to know how to play the chords. So, read on, if this sparks an interest. Each of us gets to decide how to view our board.
For the B ‘form’, we can look at it different ways. It does sneak in behind the C form if it is a hybrid [mixed A and C shape, more on this in a moment] or Major 7 [probably a BMaj9 = x2132x], or Dominant 7 [your basic B7 x21202] type chord. So, if your chord system says one of these carries more weight than the C form, the B form exists.
For the hybrid just mentioned, the B would be x2144x which is kind of hard to finger [2 string bar with the pinky or using 3 and 4 fingers which is a spread]. Yet, that shape can even move down one more fret to B flat = x1033x. So, the hybrid may just be a B flat form! In this instance, it just may not matter which tone names the form as much as it is just a 5 string root chord system. Everything is fingerable around the 5 string; it just depends on which finger we put on the root. If we think like this and use C and A form language, it is C to the back of the root and A to the front. In hybrid language there are 3 forms: 6, 5, and 4 string roots. And while we are at it, why not a 3 string root as well [3rd string based shapes can be found inside one of the others – CAGED forms].
For the F ‘form’, we again can look at it different ways. The 3-2-1 shape that it has can be viewed as deriving from the E form [2-1-0]. Yet, it is kind of like C and G in fingering and shape. I know many folks which view the F as its own thing. This is fine. You are the boss.
And, yet again, we can think of it as a hybrid. When we consider the E and G as a 6 string root chord system [everything revolving around it, just depends on the finger], F [1032xx = 5th-less] would actually be the form when we run that flag up the pole. F sharp Major would be kin to the B chord we mentioned above and the F would be in the same position as the B flat.