Arpeggio shapes

Chord tones shouldn’t require holding a chord. This exercise gives you two movable arpeggio shapes — one minor, one major — and neither asks you to learn new territory: the minor one lives inside pentatonic box 1, and the major one lives inside the E-form barre chord. You already know the neighborhoods; now meet the residents.

The minor arpeggio inside box 1

A minor’s chord tones are A, C, E (1, flat 3, 5). All three live in the pentatonic box you’ve drilled — the arpeggio is box 1 with the two non-chord notes (D and G) removed. Columns are strings, low E leftmost; o chord tone, R root:

A minor arpeggio, inside pentatonic box 1
    E A D G B e
5   R . . o o R
7   . o R . . .
8   o . . . . o

note order, low to high:
A(E5) C(E8) E(A7) A(D7) C(G5) E(B5) A(e5) C(e8)

Play it with a metronome at 60 BPM, one note per click, up and down. Two rules that make arpeggios sound like music instead of exercise: let each note speak alone (release the previous finger so notes don’t smear), and know which degree you’re on — say “one, three, five” as you climb.

Because it’s just box 1 minus two notes, you can flicker between them: four bars of pentatonic, four bars of only the arpeggio. Hear how the arpeggio version suddenly sounds like an Am chord even though nothing is strummed? Three notes carry the whole identity.

The major arpeggio inside the E-form barre

Hold a G major barre chord (E form, barre at fret 3). Its chord tones G, B, D (1, 3, 5) sit under your fingers; here they are one at a time:

G major arpeggio, inside the E-form barre at fret 3
    E A D G B e
3   R . . . o R
4   . . . o . .
5   . o R . . .

note order, low to high:
G(E3) D(A5) G(D5) B(G4) D(B3) G(e3)

Drill it the same way. A good practice trick: strum the barre chord once, then immediately play the arpeggio — chord as question, arpeggio as answer. They should sound like the same thing in two forms, because they are.

Both shapes travel

No open strings in either shape, so the barre-chord rule applies: the root on the low E string names it. Minor shape with its first root at fret 8? C minor arpeggio. Major shape rooted at fret 5? A major. Slide them anywhere; the low E note table from the chords and keys courses is the same address book.

And here’s the pair worth drilling daily: minor shape at fret 5 (A minor) then major shape at fret 5 (A major). Same root, and only one note differs — the third: the minor shape’s C becomes the major shape’s C#, one fret up. You’ve met that hinge as a chord change; now you can hear it swing one note at a time. Next exercise, these shapes stop being drills and start being aim.