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An '''Interval is defined as the distance between two different notes. The distance between C and G is referred to as an "interval of a [[fifth]]" (C d e f G). The distance between C and G is also a fifth, and so is that between C# and G, C and G#, Cb and Gb, etc. It is the alphabetical name that gives us the interval number. However, the interval is not completely explained until we describe its quality. This is shown by the number of [[semitone]]s included in the interval. The distance between C and E is a [[third]]. If this distance includes 4 semitones, we say that it is a [[major]] third. If it has only 3 semitones (C to Eb), we call it a [[minor]] third. A major interval always has one more semitone than its corresponding minor interval.

An '''Interval''' is defined as the distance between two different notes. The distance between C and G is referred to as an "interval of a [[fifth]]" (C d e f G). The distance between C and G is also a fifth, and so is that between C# and G, C and G#, Cb and Gb, etc. It is the alphabetical name that gives us the interval number. However, the interval is not completely explained until we describe its quality. This is shown by the number of [[semitone]]s included in the interval. The distance between C and E is a [[third]]. If this distance includes 4 semitones, we say that it is a [[major]] third. If it has only 3 semitones (C to Eb), we call it a [[minor]] third. A major interval always has one more semitone than its corresponding minor interval.

All 2nds, 3rds, 6ths and 7ths are either major or minor. We use the term perfect to describe intervals of the unison, [[octave]], 4th and 5th values. If a major interval is chromatically increased by a semitone it becomes [[augmented]]. For example, C to A is a major [[sixth]], but C to A# is referred as an augmented sixth. If a minor interval is reduced by one semitone it is said to be [[diminished]]. For example, G to Bb is a minor third, but G# to Bb is a diminished third. By adding or subtracting a semitone, perfect intervals can be made augmented or diminished.

All 2nds, 3rds, 6ths and 7ths are either major or minor. We use the term perfect to describe intervals of the unison, [[octave]], 4th and 5th values. If a major interval is chromatically increased by a semitone it becomes [[augmented]]. For example, C to A is a major [[sixth]], but C to A# is referred as an augmented sixth. If a minor interval is reduced by one semitone it is said to be [[diminished]]. For example, G to Bb is a minor third, but G# to Bb is a diminished third. By adding or subtracting a semitone, perfect intervals can be made augmented or diminished.