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Jokes / Re: Younger ones will not get either of these
« Last post by Peter Anderson on Today at 07:47:24 AM »
This is shocking!
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Jokes / Re: Younger ones will not get either of these
« Last post by Peter Anderson on Today at 07:46:49 AM »


3

Finally, though it is not essential, very often the alternate bass note of a slash chord is another note from within the chord.

In the above example of         G/B

           the note B is the 3rd of the G major triad (G, B, D),   and,

in           Am7/G

           the note G is the 7th of the A minor seventh chord (Am7 = A, C, E, G).


Choosing a bass note from the main chord is not essential but it is common practice and a useful guide for us.


So, how do you pronounce these two slash chordsÖ

                        Bm/F#

                        D♭m/A♭   ?   

You will find the answers in the next Reply.

Peter
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Peter's Pearls / Re: No__118___The Pentatonic Scale
« Last post by Peter Anderson on September 17, 2019, 07:37:21 AM »


So why does the Pentatonic Scale sound good?

Besides having no half-steps, we now know it lacks the 4th and 7th  degrees, of the major scale.     

In a major scale, the 4th and 7th  degrees form a tritone.

In the Key of C Major, those notes are    F   &   B

If you strike either of these notes and go up 6 semi=tones, or down 6 semi-tones from it, you will always land on the other note. - obviously maybe an octave higher or lower.

For more on Tritones    see      Pearl No 109 - How to spice up my chords, and here is a link to the specific mention of Tritones, and if you click it, you can read about them in a new window:

http://www.ar-group.org/smforum/index.php?topic=3366.msg12508#msg12508

From that Pearl, you will know the tritone interval introduces tension and suspense to the scale.

So by removing the 4th and 7th  degrees, the tension and suspense disappears from the pentatonic scale.

From a different point of view, the major seventh and to some extent the perfect fourth intervals are considered to be dissonant in a major scale.

The intervals in a pentatonic scale, starting at C, the root note we have

              a major second,     followed by
              a major third,        then
              a perfect fifth,    and finally
              a major sixth.

This means we only have consonant intervals.

This helps to explain why the Pentatonic Scale does sound so good.

In the next Reply, we see why guitarists appreciate the pentatonic scale.

Peter
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Jokes / Re: UnderAttack
« Last post by Peter Anderson on September 16, 2019, 07:44:20 AM »


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Jokes / Re: UnderAttack
« Last post by Peter Anderson on September 16, 2019, 07:41:44 AM »
I have always enjoyed and been intrigued by these descriptive words and devising new ones over the years.

Scroll down to find a few of my favourite ones.

Peter
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Peter's Pearls / Re: No__114__The Logic behind Chord Names and Symbols
« Last post by Peter Anderson on September 16, 2019, 07:34:53 AM »
So what is reason for wanting an alternative Bass Note?

The most common reason is the music's composer wants to stress a particular bassline in a chord progression.

Let me give an example.

An often seen chord progression is:

                G     
                G/B
                C


In this progression the G chord is being played somewhere on your keyboards, on the first chord G.

But, on the second chord,

             G/B   

         the keyboards continue to play the G chord, while the bass pedals sounds the note B

If you don't use the pedals, then your keyboards (which ought to be the Lower Keyboard) plays the lowest note of  B  to stress the voice of a different bass note, which in this example, makes a smooth, chromatic ascending transition to the root of the C chord, which follows the second chord.

So, the bass would emphasize the notes G, B, then C on each of these 3 chords, giving a pleasing bass line that 'walks up' to the root chord of C.


Another example of a progression might be:

              Am
             Am(maj7)/G#
             Am7/G
             D/F#
             F


This is a very common scenario where the alternate bass notes create a smooth, this time, descending chromatic bassline, and here is that bass line for you:

               A,   G#,   G,   F#,   F

There is a final thought about playing slash chords in the next Reply.

Peter
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General Interest - This and That / AR Classical Variation Setting
« Last post by Roger Mardon on September 15, 2019, 09:30:14 PM »
In an idle moment while browsing Martin Harrisí Product Training Notes I noticed the ARís Classical variation setting came from the Yamaha F400 classical organ. Itís of no importance but does anyone know anything about this instrument? I have searched the Internet with absolutely no success.

Edit: I should have said nothing on Google. Iíve now found an ownerís manual on Yahoo. I didnít realise Yamaha made classical organs such as this.
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Jokes / UnderAttack
« Last post by Peter Anderson on September 15, 2019, 08:19:05 AM »

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Peter's Pearls / Re: No__118___The Pentatonic Scale
« Last post by Peter Anderson on September 15, 2019, 08:15:16 AM »
The word pentatonic comes from the Greek "pente" meaning 5 and the Latin "tonicus" meaning tone.

So a pentatonic scale is a scale with only 5 tones per octave, which is in contrast to the more familiar heptatonic scale that has seven notes per octave like the major and minor scales we are all very familiar with.

Pentatonic scales were developed independently by many ancient civilizations, and they are considered to be one of the oldest scales.


A pentatonic scale can be formed in any major or minor key, but we will start with the  major pentatonic scale.

To generate the major pentatonic scale, simply remove the 4th and 7th  degrees, from the matching major scale, which will leave you with just five notes per octave,  (6 if you include the octave note as well).

So the C Major pentatonic scale looks like this:

         

so you play the notes         
                 C            D           E            G              A            C

If you play this scale, I think you will agree, it has a distinct and pleasant sound.

This is probably because it contains no half-steps, like the major and minor scales.

This scale is reckoned to be one of the oldest of all scales.
There are numerous songs that are based on this scale.  (I'll mention some later.)

In the next Reply we will explore more reasons why this scale sounds so good.

Peter
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