Re: Music Theory: Intervals 101
"Charmed Snark" <snark@cogeco.ca> wrote in message
news:Xns9A7C6A7F7AF14SnarkCharmedImSure@66.175.223.2...
> sycochkn expounded in
> news:P4qdnQMX4OWb5GDanZ2dnUVZ_r6rnZ2d@earthlink . com :
>
>>
>> "Charmed Snark" <snark@cogeco.ca> wrote in message
>> news:Xns9A7B9989729AFSnarkCharmedImSure@66.175.223.2...
>>> Since I've been sick for most of this week, I've
>>> not been practicing. So I decided that if I don't
>>> feel up to doing practice, its time to do some music
>>> theory practice instead. To help me solidify and
>>> memorize it, it helps to share it.
>>>
>>> Here and elsewhere you see many descriptions of
>>> chords with augmented, diminished, dom7, add2 and
>>> add4 notes in addition to the regular minor/major
>>> forms.
>>>
>>> To keep things simple, I'm going to skip dom7, add2
>>> and add4 concepts.
>>>
>>> Since chords are based upon intervals, let's do
>>> "intervals 101". You'll want to view this message in
>>> fixed point font, for the table columns to line up.
>>> If necessary, copy and paste the whole message into
>>> notepad and then choose a fixed font like Lucida
>>> Console.
>>>
>>> The 0th note is your "root" note, and the 12th
>>> note is the octave higher. Others in this NG can
>>> check my work:
>>>
>>> SEMITONAL
>>> INTERVAL ORDINARY INTERVAL-TYPE
>>> ========= ======================
>>> 0 Unison (1st)
>>> 1 Minor 2nd
>>> 2 Major 2nd
>>> 3 Minor 3rd
>>> 4 Major 3rd
>>> 5 Perfect 4th
>>> 6 Augmented 4th (tritone)
>>> 7 Perfect 5th
>>> 8 Minor 6th
>>> 9 Major 6th
>>> 10 Minor 7th
>>> 11 Major 7th
>>> 12 Perfect Octave
>>>
>>> Before we look at diminished and augmented, the first
>>> hill to climb is to memorize this table. So how to
>>> make it simpler? Some observations:
>>>
>>> Except for Unisen and Octave, the general sequence
>>> with 2 exceptions is this:
>>>
>>> x Minor nth
>>> x+1 Major nth
>>> ..repeated..
>>>
>>> So think "minor, major, minor, major...", "minor
>>> before major".
>>>
>>> Going a step further:
>>>
>>> 0 Unisen
>>> 1 Minor 2nd
>>> 2 Major 2nd
>>> ...
>>> 10 Minor 7th
>>> 11 Major 7th
>>> 12 Octave
>>>
>>> Now let's get the exceptions out of the way:
>>>
>>> 5 Perfect 4th
>>> 6 Augmented 4th
>>> 7 Perfect 5th
>>> 8 Minor 6th
>>>
>>> The Perfect forth is neither major, nor minor, so
>>> that generalization does not apply. You simply just
>>> must remember that the p. 4th is followed by the
>>> augmented 4th (the "tritone") -- more on that
>>> business later.
>>>
>>> The perfect 5th (as I remember it) is so perfect,
>>> that it has NO counterpart. It is immediately
>>> followed by the minor/major 6th.
>>>
>>> So remember: the perfect 5th is perfectly perfect.
>>>
>>> So those are the two middle exceptions to
>>> remember.
>>>
>>> To commit this to memory, I encourage you now
>>> to write the first table out a few times.
>>>
>>> Now the last part. The general pecking order is :
>>>
>>> Diminished
>>> Minor
>>> Major
>>> Augmented
>>>
>>> Of course with the perfects we have exceptions, but
>>> if you know this much, the rest should fall into
>>> place. The "enharmonic equivalent" is shown in the
>>> last column. Study the two rightmost columns so
>>> that you fully understand how the equivalents work.
>>>
>>> SEMITONAL ORDINARY ENHARMONIC
>>> INTERVAL INTERVAL-TYPE EQUIVALENT
>>> ========= ============= ============
>>> 0 Unison (1st) Diminished 2nd
>>> 1 Minor 2nd Augmented unison
>>> 2 Major 2nd Diminished 3rd
>>> 3 Minor 3rd Augmented 2nd
>>> 4 Major 3rd Diminished 4th
>>> 5 Perfect 4th Augmented 3rd
>>> 6 Augmented 4th Diminished 5th
>>> 7 Perfect 5th Diminished 6th
>>> 8 Minor 6th Augmented 5th
>>> 9 Major 6th Diminished 7th
>>> 10 Minor 7th Augmented 6th
>>> 11 Major 7th Diminished Octave
>>> 12 Perfect Octave Augmented 7th
>>>
>>> From this we see that:
>>>
>>> 0 [Unison (1st)] Diminished 2nd
>>> 1 Minor 2nd [Augmented unison]
>>> 2 Major 2nd [Diminished 3rd]
>>> 3 [Minor 3rd] Augmented 2nd
>>>
>>> In that list, if we just look at the "2nd" we see
>>> that the general relationship holds true:
>>>
>>> 0 Diminished 2nd
>>> 1 Minor 2nd
>>> 2 Major 2nd
>>> 3 Augmented 2nd
>>>
>>> One last thing we can gain from that table. What if
>>> we want only the Major notes for the major scale?
>>> Dropping the lines with "minor" we and the evil
>>> Tritone we get the eight notes:
>>>
>>> SEMITONAL
>>> INTERVAL ORDINARY INTERVAL-TYPE
>>> ========= ================================
>>> 0 Unison (1st)
>>> 2 Major 2nd
>>> 4 Major 3rd
>>> 5 Perfect 4th
>>> 7 Perfect 5th
>>> 9 Major 6th
>>> 11 Major 7th
>>> 12 Perfect Octave
>>>
>>> Note the numbers in the right column now:
>>>
>>> SEMITONAL DIATONIC
>>> INTERVAL ORDINARY INTERVAL-TYPE SCALE NOTE
>>> ========= ====================== ========
>>> 0 Unison (1st) 1st/root
>>> 2 Major 2nd 2nd
>>> 4 Major 3rd 3rd
>>> 5 Perfect 4th 4th
>>> 7 Perfect 5th 5th
>>> 9 Major 6th 6th
>>> 11 Major 7th 7th
>>> 12 Perfect Octave 8th
>>>
>>> Here you see where the 1-7th note numbers come from
>>> (the diatonic scale values).
>>>
>>> To get the minor scale, drop all the major notes and
>>> the evil tritone:
>>>
>>> SEMITONAL
>>> INTERVAL ORDINARY INTERVAL-TYPE
>>> ========= ======================
>>> 0 Unison (1st)
>>> 1 Minor 2nd
>>> 3 Minor 3rd
>>> 5 Perfect 4th
>>> 7 Perfect 5th
>>> 8 Minor 6th
>>> 10 Minor 7th
>>> 12 Perfect Octave
>>>
>>> So there ya have intervals 101. In summary, memorize:
>>>
>>> 0 unison
>>>
>>> x Minor nth
>>> x+1 Major n+1th
>>> ..repeated..
>>> 12 Perfect octave
>>>
>>> and
>>>
>>> 5 Perfect 4th
>>> 6 Augmented 4th (oooh so evil tritone)
>>> 7 Perfect 5th (so perfect, no other 5th)
>>>
>>> and memorize the general relationship :
>>>
>>> Diminished
>>> Minor
>>> Major
>>> Augmented
>>>
>>> Hopefully this helps some beginners interested in
>>> music theory to better understand intervals.
>>>
>>> Chords use the "diatonic note numbers". So now that you
>>> know what they are, and the differences between dim,
>>> min, maj, aug intervals, you should be pretty well on
>>> your way to being to disect chords.
>>>
>>> Snark.
>>> ** Posted from * w w w .teranews . com **
>>
>> Why not the dom7 the major minor and dom7 are the three types of
>> chords that you need to play music. The others are nice additions but
>> not necessary.
>>
>> Bob
>
> The post was not designed to cover everything you needed to know about
> chord construction, but one step towards it (intervals). If you put too
> much information in there, eyes start to glaze over.
>
> Snark.
> ** Posted from * w w w .teranews . com **
I was suggesting less not more.
Bob