E flat

musical note which is one half-step lower than the note E

Re Dièse or D♯ (D sharp) is the fourth semitone of the solfege.It lies one half of a tone above D and one half of a tone below E, thus being enharmonic to Mi Bémol or E♭ (E flat).When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the D♯ semitone is approximately 311.127 Hz. See pitch (music) for a discussion of historical variations in frequency.
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Also see: E-flat minor, or E major. E-flat major is a major scale consisting of the pitches E-flat, F, G, A-flat, B-flat, C, D, and E-flat. Its key signature has three flats: B, E, A (see below: Scales and keys). [The musical note E-flat is a half-tone between D & E.]Its relative minor is C minor, and its parallel minor is E flat minor.E-flat major is often associated with bold, heroic music, in part because of Beethoven's usage. His Eroica Symphony and his Emperor Concerto are both in this key. Also Beethoven's (hypothetical) 10th symphony is in the key of E-flat major.
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