E (musical note)

E is the third note and the fifth semitone of the C major scale, and mi in fixed-do solfège. It has enharmonic equivalents of F♭ and D, amongst others.
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle E is approximately 329.628 Hz. See pitch (music) for a discussion of historical variations in frequency.

Scales

Common scales in the key of E.

E major: E F G A B C D E
E natural minor: E F G A B C D E
E harmonic minor: E F G A B C D E
E melodic minor ascending: E F G A B C D E
E melodic minor descending: E D C B A G F E

E major modes ([diatonic scale]s).

E Ionian: E F G A B C D E
E Dorian: E F G A B C D E
E Phrygian: E F G A B C D E
E Lydian: E F G A B C D E
E Mixolydian: E F G A B C D E
E Aeolian: E F G A B C D E
E Locrian: E F G A B C D E

E melodic (Jazz) minor modes">Jazz scale">E melodic (Jazz) minor modes

E ascending melodic minor: E F G A B C D E
E Dorian ♭2: E F G A B C D E
E Lydian augmented: E F G A B C D E
E Lydian dominant: E F G A B C D E
E Mixolydian ♭6: E F G A B C D E
E Locrian ♮2: E F G A B C D E
E altered: E F G A B C D E

E harmonic minor modes

E harmonic minor: E F G A B C D E
E Locrian 6: E F G A B C D E
E Ionian 5: E F G A B C D E
E Dorian 4: E F G A B C D E
E Phrygian 3: E F G A B C D E
E Lydian 2: E F G A B C D E
E Superlocrian 7: E F G A B C D E

E harmonic major modes

E Harmonic Major: E F G A B C D E
E Dorian 5: E F G A B C D E
E Phrygian 4: E F G A B C D E
E Lydian 3: E F G A B C D E
E Mixolydian 2: E F G A B C D E
E Lydian Augmented 2: E F G A B C D E
E Locrian 7: E F G A B C D E

F-flat

F is a common enharmonic equivalent of E, but is not regarded as the same note. F is commonly found after E in the same measure in pieces where E is in the key signature, in order to represent a diatonic, rather than a chromatic semitone; writing an E with a following E is regarded as a chromatic alteration of one scale degree.