Jazz: A style of music of Afro-American roots chracterized by a strong rythmic understructure, blue notes, and improvisation on melody and chord structure.

Jubilate: A Song of praise, usually based on Psalm 100.

Just Tuning: Any system of tuning in which the intervals are pure, and do not deviate from the overtone series.

Just Intonation: Any system of tuning in which the intervals are are tuned so that they do not beat.

Last updated: 3/6/2023