For any musician, learning and practicing arpeggios can be an effective way to build technique, and, in the right context, can help to improve your ear and develop your sense of harmony. For the guitarist, arpeggios can also help develop fluency across the fretboard.
The Arpeggio Exercise below is based on an embellished and harmonized G major scale. First, each note of the major scale is harmonized with a seventh chord. The quality (major, minor or half diminished) of each of these diatonic chords (diatonic = notes or chords within a key) depends on its position in the scale.
Inserting diminished chords between each diatonic chord embellishes the harmonized scale and “tonicizes” (directs attention toward) each successive chord. Think of diminished chords as connecting chords that link adjacent chords.
The exercise below uses two-octave arpeggios based on this embellished, harmonized scale. Click the image for a pdf (or click here). Once you are comfortable with this exercise in the key of G, try transposing it to other keys to begin to train your ear and develop fretboard visualization skills in new harmonic contexts.