Arpeggios are the notes of a chord played one note at a time, usually ascending or descending in order.
Arpeggios can be used for melodies, solos and riffs to create a more harmonized sound when played with their corresponding chord.
Arpeggios use the same notes from a chord voicing. Here's a review of how chords are made: the most basic chord forms are referred to as triads. A triad consists of 3 notes from a scale: the first (root), the third, and the fifth note of the scale. Minor triads use the flat third note of the scale.
These same three notes are used and repeated throughout the fretboard when playing major or minor arpeggios.
