A double flat is a musical symbol that indicates a note should be lowered by two half steps, or two semitones. It is represented by a symbol that looks like two flat signs (♭♭) placed before the note. For example, if the note is D, applying a double flat would change it to D♭♭, which sounds the same as C. Double flats are used to adjust the pitch of a note more significantly than a single flat, and they are often found in complex musical passages or certain key signatures.

英語での「double flat」の定義と意味

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