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Theory

Small octave

The small octave covers the notes C3 to B3, written in the older German system with lower-case letters and no stroke. It lies directly below the one-line octave with middle C. Three of the six open guitar strings sound in it.

Range
C3 to B3
Older notation
lower-case letters: c, d, e …
Above it
One-line octave
Below it
Great octave
Scientific
C3 to B3

Lower-case letters, no stroke

The page Reading music numbers the octave registers (C3, C4, C5). In the older German system, which you meet in German-language books, they run like this: the great octave is written with capital letters (C, D, E …) and counted as the low register, the small octave with lower-case letters (c, d, e …), the one-line octave with one stroke. In the scientific system, used here, it is written C3 to B3. The C of the small octave lies an octave below middle C.

The small octave

C D E F G A B 1 1 ½ 1 1 1

From C3 to B3. D, G and B are marked: they are the notes of the open D, G and B strings of the guitar.

Where the guitar lies

The frequencies of the open strings are given on the page Tools: 82.41 / 110.00 / 146.83 / 196.00 / 246.94 / 329.63 Hz. If you assign them to the octave registers, the D, G and B strings lie in the small octave.

Open stringFrequencyOctave
E (low sixth string)82.41 Hzgreat octave
A110.00 Hzgreat octave
D146.83 Hzsmall octave
G196.00 Hzsmall octave
B246.94 Hzsmall octave
E (high first string)329.63 Hzone-line octave

The assignment refers to the sound. The symbol library points out that guitar music is notated sometimes with and sometimes without the small 8 under the treble clef, and in both cases sounds an octave lower than written.

Try it yourself: Notes on the Fretboard trains naming the notes on the six strings. You will find any D, G or B from the table there on the open strings.