A fifth is the interval from the first to the last of five consecutive notes on a diatonic scale. A perfect fifth spans seven semitones, while a diminished fifth spans six semitones and an augmented fifth spans eight semitones.
A fifth is the interval from the first to the last of five consecutive notes on a diatonic scale. A perfect fifth spans seven semitones, while a diminished fifth spans six semitones and an augmented fifth spans eight semitones.