Dear Flat community, A new year is ending and we wanted to seize the opportunity to share with you all our love and thankfulness. 2017 has been full of unforeseen developments and...
Today we continue our series on hearing intervals.
In Part 1 we talked about:
- ascending minor 2nd (same sound as augmented unison)
- ascending major 2nd
- ascending minor 3rd (same sound as augmented seconds)
Today, in Part 2 we will talk about:
- ascending major 3rd
- ascending perfect 4th
- ascending augmented 4th (same sound as diminished 5th)
- ascending perfect 5th
Ascending major thirds
A major 3rd is made of 4 semi-tones (ie : 2 whole-tones)1
Every major thirds share a common sound.
It can be B-D♯ or C-E or A♭-C ...
Note that G-C♭ is made of a 4 semi-tones too. But the name of this interval is diminished 4th. Since major thirds and diminished 4th correspond to the same width (4 semi-tone), they share the same characteristic sound. So what applies to major thirds also applies to diminished 4th.
Here are some examples :
You'll easily recognize this sound.
Listen carefully to the first two notes of this ("O"-"WHEN") :
You can use this famous song to remember the sound of a major third. (or diminished 4th)
Ascending Perfect fourths
An ascending perfect 4th is made of 5 semi-tones.
Every perfect 4th share a common sound.
It can be B-E or E-A or A♭-D♭ or C-F...
Here are some examples of perfect 4th:
Listen carefully to the first two notes of "La Marseillaise", the national anthem of France:
Ascending Augmented fourths
An augmented 4th , (and a diminished 5th) is made of 6 semi-tones (3 whole-tones). This interval is often called a "triton"
Every augmented 4th (and diminished 5th) share a common sound.
It can be B-E♯* or F-B *or *C-F♯...
Note that B-F is made of 6 semi-tones too. But the name of this interval is diminished 5th. Since augmented fourths and diminished fifths have the same width (6 semi-tones), they share the same characteristic sound.
Here are some examples of augmented fourths and diminished fifths:
Listen carefully to the first two vowels of this ("THE"-"SIM") :
Ascending Perfect fifths
A perfect 5th is made of 7 semi-tones.
Every perfect 5th shares a common sound.
It can be B-F♯ or E-B or G-D or B♭-F...
Here are some examples of perfect fifths:
Here is an excerpt of "Also sprach Zarathustra", composed by Richard Strauss in 1896, and used in Stanley Kubrick's 1968 masterpiece "2001 A Space Odyssey". Listen to the trumpets at 0:15.
That's it for now. See you in Part 3 where we will discuss:
- ascending minor 6th (same sound as augmented 5th)
- ascending major 6th
- ascending minor 7th (same sound as augmented 6th)
- ascending major 7th