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Pentatonic guitar scales [5 tone scales] are possibly the most popular & most used melodic tone groups on our planet. It is often the first complete scale system a student learns. One way we learn them is using frames (grids, maps, charts). The pentatonic scale is any scale with 5 tones, yet in Western music, it specifically refers to the Major & minor types. Each of these have a specific formula, or set of tonal relationships that create the sound of Major & minor pentatonic. It can be viewed to be a 'hollowed out' Major/minor scale system [it is 'missing' the 4 & 7 to the Major, & those same tones are the 2 & 6 to the minor]. The Major pentatonic scale formula is R 2 3 5 6. This scale is the main riff in 'My Girl'. The minor pentatonic scale formula is R ♭3 4 5 ♭7. The same 5 tones, just calling a different tone, the root. I typically use the term 'frame' to refer to this particular set of patterns/positions/fingerings. For our purposes, we use 2 names [starting points] for this scale. G and Em are relatives in the key signature system [they share the 'same' key signature]. We first train the scale [both fingerings/positions]. Once we have it in our hands, we use the tone set to melodically improvise. We also build chords. This is our process for working with scales. We will begin our pentatonic studies with frame 1 of Em/G in Multiply. This shape is a simple 2 tone per string scale made up of 5 tones [the penta- part]. Within this position, tones are repeated. There are two octaves of E [64 & 41] and two octaves of G [63 & 31].
In this last session series of Magnify, we will move the scale form based on octave 54 (scale form 54, C Major scale at the nut) up the board. Just as we can move the pentatonic scale shapes, we can do the same with Major scale patterns [or any closed system]. We first played the C Major scale in this session. We've moved the whole shape up one fret. What were opens are now 1 frets. The D♭ scale is in a fixed position in P1 [fingers match the fret numbers], unless we are using 3 tones per string. If 3 tones per string, we shift to P2 on the 2 string. As with any closed system, when we move it, it maintains its quality; its musical meaning. In this instance, all of the scale components are in the same relative position. 12 for 1 = movable to every position → 12 Major scales.
When we move this shape to these positions...the key is...It's good to take note that most of the enharmonic keys for the Majors, have flat names. The only key with 2, in this list, is F♯ (also G♭ - 6 sharps/6 flats). And, D♭ is C♯ (7 sharps) & B is C♭ (7 flats). Yet, we rarely, if ever, see D♭ & B written as C♯ & C♭. D♭ has 5 flats (better than 7 sharps), and B has 5 sharps (better than 7 flats). See the Circle of 5ths. We can refer to this scale as the scale form 54 (or the C scale form - since the root C is the lowest this shape can be moved -the scale pattern is a heel/origin). 54 = 5/4 = string the root is located / finger that starts the pattern]. For the key of C Major [the scale form, the heel], we can play this scale as a 5/3, since we don't have to fret the nut [the open strings]. And, we could start the scale in the higher versions with the 3 finger (Major root). This Major scale pattern lines up with frame 4 of the pentatonic system & the C CAGED form.
B type chords B Major, B5, Bm, BMaj7, B7, B(♭6), Bsus9, Bm7.