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We've seen that chords are numbered within a key system. The I IV V are Major, ii iii vi are minor, and the viio is diminished (diminished is minor-flat-five). One way we can understand a song is by understanding its harmonic motion within a key. For this session, we will stick with our chord scheme from the Major scale. We will use Roman numerals as a harmonic map to 'plug-in' the chords from the C and G.
We previously moved a fragment of this chord shape. Now, we are going to build a full version = add the 3-2-1 strings. The chord components (R-3-5) are included. We get to memorizing these, as they are the basis for modifications (mods). To play this full version, we will use a bar [barre]. In guitar fingerings, when we fret the same fret, on different strings, at the same time, this is a bar. Like the word 'fret', 'bar' is a noun and a verb [and means other musical things - see notation and 12 bar]. When we bar, we can press the whole fret space, or only some strings. We don't have to press all 6 strings. Every chord, especially a bar type, has a hand shape [angle, points of pressure]. Any bar can be a hinge bar [I believe all bars are]. Hinge bars are toggling tones within a bar. More on this later. For this chord, we press the tip of the 1 on the 6 string, used a curved finger, and press just the 2 and 1 strings with the middle knuckle. This conserves hand power. To get into this bar shape, we can lay our 1 finger across the nut [using 3, 4, and 2 fingers fretting 5, 4, and 3 strings respectively for fretted tones] as it will cover all the stings once we move it [this will be barring]. We don't have to do this ['bar the nut'], but it definitely shows us how this chord is structured, and gives us a movable fingering.
Once we've used frame 5 as a limit, we connect it to what we already know for Am/C, focusing on linking frame 5 to frame 1.
- Take Inventory → we can see that frames 1 and 5 share a border. These are the middle tones [tail of frame 5, head of frame 1]. What were 7 & 8 frets are now 2 & 3 frets.
- Connect them → improvise with frames 5 & 1 in Am/C. Use all of the tones of both to improvise, build chords, with or without audio.
- Stitch → work with any string couplet [any two strings, adjacent or non-]. Start with the 2 & 1 strings [this would be 3-3, 5-5, 8-8]. We work every tonal combination of just those 2 strings. After the 2/1 strings, we do the same with 2/3, 3/4, 4/5, 5/6, plus any other combinations. The idea is to break it down, add it up.
- Jam with both frames [include chords!].