A three-tone chord, also known as a TRIAD, is a type of chord consisting of three distinct notes. It is one of the most common types of chords used in music and is often used to create a sense of harmony. The three notes of a TRIAD are usually the root note, the third, and the fifth. The root note is the note that the chord is named after, while the third and fifth are intervals of a major or minor third above the root. Triads are used in many different genres of music, from classical to jazz to pop.