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D-flat major (uncountable)

(music) A major key with the notes D♭, E♭, F, G♭, A♭, B♭, C, the key signature of which has five flats.

${\key des \major des' es' f' ges' aes' bes' c'' des''2}$
(music) The major chord with the notes D♭, F, and A♭.

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D-flat major (not comparable)

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