What is a Perfect Fifth?

A perfect fifth is a musical interval that represents the distance between two notes that are seven semitones apart. In Western music theory, the interval occurs when the second note is five letter names higher than the first. For example, the distance between the notes C and G forms a perfect fifth.

The perfect fifth is known for its strong and stable sound and is considered one of the most consonant intervals in music. Because of this stability, it is commonly used in chords and harmonies. Many basic chords, such as major and minor triads, include a perfect fifth as one of their core intervals.

Perfect fifths appear frequently in melodies, harmonies, and musical tuning systems. They are also widely used in guitar power chords and orchestral arrangements because of their clear and balanced tone. This interval plays a fundamental role in music theory and composition, helping create the harmonic structure of many musical styles.