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Nonchord tone

arts Maturity 7-9 Next article →

Music is built from many different notes. Some notes belong perfectly to a chord, which is a group of notes played together. We call these chord tones. However, many songs include notes that do not belong to that specific chord. These are called nonchord tones, or nonharmonic tones. They add a special kind of tension to the music. This tension is often called dissonance. Musicians use these notes to make a melody feel more interesting or emotional.

Nonchord tones usually follow a specific three-step pattern. First, there is a preparation where the note sounds stable. Next comes the dissonance, which is when the nonchord tone creates a tense sound. Finally, there is a resolution. This is when the tense note moves to a stable chord tone. Most nonchord tones create intervals like a second, fourth, or seventh. These sounds feel like they need to move to feel smooth again.

Music historians look at how these notes have changed over time. In European classical music, composers began using more dissonance as years passed. They used notes like ninths, elevenths, and thirteenths. These notes eventually became a normal part of the chord itself. This happened because of the push between different musical forces. Even in jazz, the rules can change. In 1940s bebop jazz, a note like F might be part of a C chord. This is because the chord is analyzed as a C7(11) chord.

There are many different types of nonchord tones. Some are unaccented, meaning they happen on a weak beat. An anticipation is an unaccented note that is played a little early. A neighbor tone moves up or down by a step and then returns to the original note. A passing tone fills the gap between two chord tones by moving in one direction. There are also accented nonchord tones that happen on strong beats. An appoggiatura is an accented note that skips to a new note and then moves by step.

Some nonchord tones work in very unique ways. A suspension happens when a note from an old chord is held over into a new chord. This note must resolve downwards to a chord tone. If the note moves upwards instead, it is called a retardation. Another type is a pedal point. This is a note, usually the lowest one, that stays the same while other chords change. This can happen in the lowest voice or even an upper voice. These tools help composers create many different feelings in their music.

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