Seconds and accidentals
Section outline
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The quality of an interval is also influenced by accidentals. The major can become minor and vice versa.
Hence if
- the upper note of a major second is lowered or the lower note is raised it becomes minor second
- the upper note of a minor second is raised or the lower note is lowered it becomes major second
- both notes have same accidental, the interval (distance) doesn't change
Example: