noun
F sharp major
Musical key term. Used in classical and contemporary music contexts.
この曲は嬰ヘ長調で書かれている。
This piece is written in F sharp major.
C sharp major, a closely related key with seven sharps.
Compound of 嬰 (えい, 'sharp') + ヘ (F, the musical note) + 長調 (ちょうちょう, 'major key').