E (musical note)

E or Mi is the first note of the E major scale.

Designation by octave

Scientific designation	Helmholtz designation	Octave name	Frequency (Hz)
E₋₁	E͵͵͵ or ͵͵͵E or EEEE	Subsubcontra	10.301
E₀	E͵͵ or ͵͵E or EEE	Subcontra	20.602
E₁	E͵ or ͵E or EE	Contra	41.203
E₂	E	Great	82.407
E₃	e	Small	164.814
E₄	e′	One-lined	329.628
E₅	e′′	Two-lined	659.255
E₆	e′′′	Three-lined	1318.51
E₇	e′′′′	Four-lined	2637.02
E₈	e′′′′′	Five-lined	5274.041
E₉	e′′′′′′	Six-lined	10548.082
E₁₀	e′′′′′′′	Seven-lined	21096.164

F flat

F♭ is a enharmonic equivalent of E, but is not usually seen as the same note. It is used in places where there is an E♭ that would come before an E. The F♭ would then replace the E which would help avoid confusion in the notation.