The note at the 12th fret of the 1st string is one octave higher than which note?

• A. C
• B. D
• C. E
• D. F

Answer: (B)

The note at the 12th fret of the 1st string (high E string) on a guitar is E. When you play the string open, it produces the note E. Fretting the string at the 12th fret raises its pitch by one octave, resulting in another E note, but at a higher frequency.

Understanding the concept of octaves is crucial. An octave occurs when you double the frequency of a note. Therefore, the correct answer directly relates to recognizing that the note played on the 12th fret is the same note (E) at a higher pitch than the open string. In other words, the question is asking for the foundational note from which the octave (the same note in a higher register) is derived.

This reinforces the significance of the 12th fret, which serves as a pivotal point on the fretboard where the note pattern repeats.