Musical notes are sounds that travel as sound waves. How frequently one of the waves travels to your ear per second determines how high or low a sound is. The higher the frequency, the higher it sounds.

So, what is the frequency of each musical note?

A musical note that is one octave higher has twice the frequencies.

For example, the middle C note (C4) has a frequency of 261.6, and C3 is one octave lower than C4. C3 has a frequency of 130.81 which is half the frequency of C4. C4 is a higher pitch, and has twice the frequencies of C3.

C3 = C in the third octave
C4 = C in the fourth octave (also called the middle C)

Click on the below virtual piano keyboard to hear the sound of each musical note. Remember, the higher the frequency, the higher the pitch.

C3
D3
E3
F3
G3
A3
B3
C4
D4
E4
F4
G4
A4
B4

Music Theory BasicsMusic Theory Lessonsc4,frequency,middle c,piano keyboard,pitch,sound,virtual pianoMusical notes are sounds that travel as sound waves. How frequently one of the waves travels to your ear per second determines how high or low a sound is. The higher the frequency, the higher it sounds. So, what is the frequency of each musical note? A musical note that is...