INTERVALS AND TRANSPOSITION


INTERVAL
The following points should be noted with respect to intervals:
·         If the upper note of a perfect or a major interval is raised by a semitone, the interval becomes augmented
·         If the upper note of a minor interval is raised by a semitone, it becomes a major
·         If the upper note of a perfect or minor interval is lowered by a semitone, it becomes diminished
·         If the upper note of a major interval is lowered by a semitone, it becomes a minor
·         If the bottom note of a perfect or major interval is lowered a semitone the interval becomes augmented
·         If the bottom note of a minor interval is lowerd by a semitone, it becomes a major
·         If the bottom note of a perfect or minor interval is raised by a semitone, it becomes diminished
·         If the bottom note of a major interval is rasied by a semitone, it becomes a minor
·         Note that c to c sharp is a chromatic semitone while c to d flat is a diatonic semitones

TRANSPOSITION

Moving a series of notes, each the same distance, is called transposition. Transposing up or down one or more octaves is the easiest kind of transposition, because all the notes keep the same names when they are moved. But music can be transposed to any interval. 

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