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Intervals - Part1
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Intervals - Part2 > |
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You
can identify an interval as simple as that the
distance between two notes. Most concepts in
music theory are expressed in terms of intervals
so the better you know this terminology, the
better your understanding of music theory will
be.
There are two basic types of intervals;
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1-Common
Intervals: An interval less than
octave. The most common simple intervals are
unison, minor second, major second, minor third,
major third, perfect fourth, tritone, perfect
fifth, minor sixth, minor seventh, major
seventh, but also include any interval below an
eighth, or the octave. |
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2-Compound Intervals: An interval greater than an octave, such as
ninth, tenth, etc... But intervals larger than a
thirteenth are rarely spoken of.
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Combine |
Compound Interval |
| 8ve plus 2nd (octave plus second) |
9th |
| 8ve plus 3rd (octave plus third) |
10th |
| 8ve plus 4th (octave plus fourth) |
11th |
| 8ve plus 5th (octave plus fifth) |
12th |
| 8ve plus 6th (octave plus sixth) |
13th |
| 8ve plus 7th (octave plus seventh) |
14th |
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As you can easly realize that if you subtract 7
from a compound interval you can find the
related common interval and vice versa.
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Interval Number And
Quality |
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The
tonic
is the first note of a musical scale, and in the
tonal method of music composition it is
extremely important in musical notation. On the
other hand the
staff
or stave
is a set of five horizontal lines on which note
symbols are placed to indicate pitch and rhythm.
The lines are numbered from bottom to top; the
bottom line is the first line and the top line
is the fifth line. The
interval number
of a note from a given tonic note is the number
of staff positions enclosed within the interval |
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The name of any
interval is further qualified using the terms
perfect, major,
minor, augmented, and
diminished.
This is called its
interval quality. |
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Unison, fourth, fifth, octave. These
intervals may be perfect, augmented,
or diminished.
A perfect
fourth is five semitones.
A perfect
fifth is seven semitones.
A perfect
octave is twelve semitones.
A perfect
unison occurs between notes of the
same pitch, so it is zero semitones.
In each case, an
augmented
interval contains one more semitone, a
diminished
interval one fewer.
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Second, third,
sixth, seventh. These intervals may be
major, minor, augmented, or
diminished.
Major seconds are two semitones, also called a
whole step,
Minor seconds are one semitone, also called a
half step.
Major thirds are four semitones.
Minor thirds are three semitones.
Major sixths are nine semitones.
Minor sixths are eight semitones.
Major sevenths are eleven semitones.
Minor sevenths are ten semitones.
In each case, the augmented interval contains
one semitone more than the major interval, and
the diminished interval one semitone fewer than
the minor interval. |
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Intervals
- Part2 > |
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