N.B. We are trying to learn the basics of MODES. We are not arguing about how good/great or how bad/and wrong those Modes are!
We are just learning Music THEORY created, written, and accepted by People/Musicians.
(P.S. If somebody wants to really dig into those Gregorian Chants, here is a very nice book,
"The Parish Book of Chant"
http://media.musicasacra.com/books/pbc_2nd.pdf_)
I'm just interested in the following description of Modes (and specifically, the Dorian):
"The modes are determined by
the final note(!!!) (or tonic) and the dominant note (or tenor).
I Dorian (final: Re; dominant: La)...
From here:
mode | music
"Each mode
comprises a diatonic scale with the compass of one octave. The modes are classified by their
finalis, the usual final note of a melody in that mode.
In the following chart of the ... church modes, the
finalis is marked by a capital letter:"
In short.
In order to determine a/any Modes we have to know the Final note - FINALIS.
From here:
The Medieval Church Modes, Dorian Scales & Mixolydian Scales
Also, from here:
Music Tutor: Church Modes
Here are a few more quotes info about that Final Note - FINALIS.
"In the original modal system of the early Western music, the principal note of the mode was called
finalis because
any piece based on that mode would always terminate on that node.
The intervals of all the other notes with respect to the finalis fully defined the mode; the main cadences available to fall back from these notes onto
the finalis would further define the way the mode should be used."
In short.
That FINAL note - FINALIS - is a very important note in order to figure out the Mode.
Here is my observation (or recommendation).
Instead of this,
"The dorian mode
starts(!) on the second scale degree of the major scale, which changes the pattern to W H W W W H W...", which changes the pattern to W H W W W H W..."
I would suggest the following:
"The dorian mode
ENDS(!) on the second scale degree of the major scale
(and also,"The dorian mode
starts(!) on the second scale degree of the major scale,...") , which changes the pattern to W H W W W H W..."
Let's emphasize that FINALIS note in order to determine the MODE.
One more thing.
We have another note from the MODES called,
characteristic modal note.
"The characteristic modal note is extremely important in modal compositions, because it is the note that establishes the unique feel of the mode."
Dorian mode:
The major 6th is what differentiates the Dorian mode from the Aeolian mode;
the 6 is therefore the characteristic modal note of the Dorian mode.
In our case, the characteristic note - CN - of the D Dorian mode is B.
Here is an interesting read.
What Is a Mode?
"So any tune I start on D using only white keys will be Dorian?
If it were quite that easy, you wouldn’t need a class. It’s helpful, at least at first, to begin and end your melody on the finalis, so if you want Dorian, that’s D. Play a short series of notes and come back to D. It’s almost impossible that your tune isn’t Dorian. Let’s look at this sequence:
D-F-G-A-G, F-G-F-E-D...."
....
More reading from the same web-site:
"
I have a good ear. Can’t I start my melody somewhere other than the finalis?
Sure. Many pieces start somewhere else, though most end up on the finalis (hence the name). If you’ve played or sung for awhile, you can probably hear the underlying finalis in a melody regardless of whether you’re ever hitting it. If you can’t, try playing the 1st-5th chord and see if it works. Note: If the melody is modern and it starts on something bizarre like the 7th or the 2nd above the octave, you won’t get a good result. Try singing the last note in the song and playing 1st-5th. Finalis, remember? If you can’t figure it out from the beginning, try the end."
And more,
"
Can I use this trick to find out what mode my favorite song is in?
Of course. Just determine the finalis by trying some 1st-5th combinations as above and start playing the song using C where the finalis belongs. If you can play it on all white notes, it’s Ionian. No? Try D. If you hit all white notes, it’s Dorian, etc. If you know the song is in a major key, start with Ionian and then try Mixolydian if Ionian doesn’t work. If you know it’s in a minor key, try Aeolian, then Dorian if Aeolian doesn’t work..."