Kéktónusok

Kéktónusok, also known as blue notes, are a musical concept found in various genres, most notably blues and jazz. These are pitches that are often slightly flattened or sung or played with a bending quality, deviating from the standard diatonic scale. Typically, these occur on the third, fifth, and seventh degrees of the scale. For example, in the key of C major, the "blue" third would be closer to an E-flat than an E natural, the blue fifth would be closer to a G-flat than a G natural, and the blue seventh would be closer to a B-flat than a B natural.

The effect of kéktónusok is to create a sense of tension, melancholy, or emotional expressiveness. They are a defining characteristic of blues music, contributing to its unique soulful sound. In jazz, kéktónusok are often incorporated into improvisations, adding color and sophistication to melodies and harmonies. The precise intonation of kéktónusok can vary depending on the performer, the musical context, and cultural influences, making them a fluid and adaptable element of musical expression. While often associated with vocal music, kéktónusok are also prevalent in instrumental performance, particularly on instruments capable of microtonal adjustments like the guitar, saxophone, and trombone.