Harmonics are high sounding overtones singled out from the harmonic range. See the harmonics technique section to see how to play harmonics.

You sometimes see a written instruction to play harmonics without any special notation. Another method is to use a diamond shaped note head where you place your fingers. Notice that the following two notes are of identical pitch. i.e. A above the stave.

The notes in the following diagram represent the resultant pitch of a note played over the various frets.

Some of these harmonic notes are an octave higher than others. e.g. The harmonics on the 5th fret are an octave higher than the harmonics on the 12th fret. The harmonics on the 12th fret are an octave higher than the open string.