noun
Lydian mode
A musical mode with a raised fourth scale degree, often described as bright or dreamy. Used in Western music theory and occasionally in Japanese music analysis.
リディア旋法は、長音階の第4音を半音上げた音階です。
The Lydian mode is a scale with the fourth note of the major scale raised by a semitone.
From English 'Lydian mode', itself from the ancient Greek region of Lydia. The Japanese term combines the katakana loanword リディア with 旋法 (mode).