A "Perfect Fifth" is a musical interval that spans five diatonic scale degrees. It is formed by the first note and the fifth note of a major or minor scale. For example, in the C major scale, the notes C and G create a perfect fifth. This interval is known for its consonant and harmonious sound, making it a fundamental building block in music composition. In Western music, the perfect fifth is often used in chords and melodies. It is considered one of the most stable intervals, contributing to the sense of resolution in music. The perfect fifth is also important in the construction of triads and is frequently found in various musical genres, from classical to pop.