E (musical note)

E is the third note 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 for a discussion of historical variations in frequency.

Designation by octave


Common scales beginning on E

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.