E flat major
 |
|
| Relative key | C minor |
|---|---|
| Parallel key |
E♭ minor enharmonic: D♯ minor |
| Dominant key | B♭ major |
| Subdominant | A♭ major |
| Component pitches | |
| E♭, F, G, A♭, B♭, C, D, E♭ | |
The E♭ (E-flat) major scale consists of the pitches E♭, F, G, A♭, B♭, C, and D. Its key signature has three flats: B, E, A.
Its relative minor is C minor, and its parallel minor is E♭ minor (or enharmonically D♯ minor). D♯ major, its enharmonic, has two double-sharps, which makes it impractical to use.
E-flat major is often associated with bold, heroic music, in part because of Beethoven's usage. His Eroica Symphony, Emperor Concerto and Grand Sonata are all in this key. Also Beethoven's (hypothetical) 10th symphony is in the key of E-flat major. But even before Beethoven, Francesco Galeazzi identified E-flat major as "a heroic key, extremely majestic, grave and serious: in all these features it is superior to that of C."
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Wikipedia