Jazz Harmony is a term frequently used in music theory to describe the harmony used in jazz music. The word 'jazz' is spelled with a voiced fricative (/dʒ/), followed by a short vowel (/æ/), and a voiceless fricative (/z/). The word 'harmony' begins with an aspirated consonant (/h/), followed by a diphthong (/ɑːr/), and a nasal consonant (/m/). When spoken together, 'jazz harmony' is pronounced with stress on the first syllable, and the second word tends to blend into the first.
Jazz harmony refers to the specific style or approach to harmonization that is commonly associated with jazz music. It encompasses the principles and techniques used by jazz musicians to construct chords, progressions, and voicings that create a unique and recognizable sound.
At its core, jazz harmony incorporates elements from traditional Western music theory while adding its own distinctive characteristics. It often involves more complex and extended chords, such as 7th, 9th, and 13th chords, which are used to create richer and more colorful harmonies. These chords are frequently altered or substituted to add tension and create a sense of improvisation and spontaneity.
Jazz harmony also places a strong emphasis on improvisation and melodic development. Rather than being confined to a fixed set of chord changes, jazz musicians often explore various chord choices and substitutions to create interesting and unexpected harmonies. This flexibility allows for greater artistic expression and individual interpretation.
Additionally, jazz harmony often incorporates concepts of functional harmony, where chords have specific roles or functions in relation to the overall tonal center or key. This includes the use of chord progressions that follow common patterns, such as ii-V-I progressions, which contribute to the harmonic language of jazz.
Overall, jazz harmony encompasses a wide range of techniques and approaches that allow for creative and expressive playing within the jazz genre. It is characterized by its unique chord choices, improvisational tendencies, and the melding of traditional music theory concepts with jazz-specific elements.
The etymology of the word "jazz harmony" is rooted in the term "jazz" itself. The exact origin of the word "jazz" is unclear, but it was first used in the early 20th century to describe a musical style that emerged among African American communities in the Southern United States. It is believed to have derived from various African dialects and Creole languages, where it had different meanings such as "to speed up", "to become excited", or "energy" or "vigor".
The term "harmony", on the other hand, comes from the Greek word "harmonia", which means "agreement" or "concord". In music theory, harmony refers to the simultaneous combination of different tones or chords, creating a pleasing and coherent sound.
Therefore, the term "jazz harmony" represents the unique and distinctive harmonic language developed within the genre of jazz.