Re: [abcusers] K: command

2000-10-10 Thread Phil Taylor

Bryan Creer wrote:
Phil Taylor says -

 If this change in standard
 becomes accepted, the vast majority of users will use it not just for
 the ambiguous tunes where it is appropriate, but for ALL transcriptions.

You want to stop this change in standard because it is something the vast
majority of users want?  As I said in my reply to Wendy Galovich's comments,
it isn't me that wants to restrict peoples choices.


Judging by the way in which most motorists treat speed limits, it would
probably be correct to say that the vast majority of drivers would
prefer their speed not to be limited by law.  Of course, what you are
proposing is that exceeding the speed limits should be optional, not
mandatory, so that's OK then.

Phil Taylor


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Re: [abcusers] K: command

2000-10-10 Thread Atte André Jensen

Man, have we been over this before! I think the main arguments (for
getting K:, which I think we should) are that

1) It has proved its use for as long as notation has existed.

2) It gives the responsibility of figuring out modes and stuff to the
player, so no need for the typist to figure everything out. 'Cause he
might make the wrong decisions. 

But, hey, I don't mess that much with modal stuff. Anyway my vote would be
for having the option of a K:

On Tue, 10 Oct 2000, Phil Taylor wrote:

 Bryan Creer wrote:
 Phil Taylor says -
 
  If this change in standard
  becomes accepted, the vast majority of users will use it not just for
  the ambiguous tunes where it is appropriate, but for ALL transcriptions.
 
 You want to stop this change in standard because it is something the vast
 majority of users want?  As I said in my reply to Wendy Galovich's comments,
 it isn't me that wants to restrict peoples choices.
 
 
 Judging by the way in which most motorists treat speed limits, it would
 probably be correct to say that the vast majority of drivers would
 prefer their speed not to be limited by law.  Of course, what you are
 proposing is that exceeding the speed limits should be optional, not
 mandatory, so that's OK then.
 
 Phil Taylor
 
 
 To subscribe/unsubscribe, point your browser to: 
http://www.tullochgorm.com/lists.html
 
 

-- 
Atte André Jensen

"I don't think Microsoft is evil in itself; I just think that 
they make really crappy operating systems." - Linus Torvalds

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Re: [abcusers] Re: O'Neill errors

2000-10-10 Thread jc



John Henckel remarked:

| I don't think the abc standard should allow K:^g _a ^b

I.e., you don't think ABC should be used  to  transcribe  music  that
uses  scales other than the classical western-European modes.  Or, if
people insist on doing such a thing, they should be forced to  use  a
classical key signature and clutter the music with accidentals to get
it into the right scale.

But I am curious:  What sort of a scale would use  ^G_A^B?   I  don't
think  I've  ever heard such a scale.  Presumably the ^G and _A would
have slightly different (microtonal) intonation. The huge gap from _A
to  ^B  makes it look like some sort of pentatonic scale.  What's the
tonic (if there is one)?

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Re: [abcusers] Modes (was O'Neill errors)

2000-10-10 Thread Laurie Griffiths

 | 1) To what does this refer: "one of the major advantages of abc
 | over conventional notation"?

 ABC does have a number of "advantages", i.e.,  things  that  it  does
 better than staff notation.  

One important advantage is that it has a standard.  Conventional 
notations have rather a large number of different conventions.
Laurie

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Re: [abcusers] Re: O'Neill errors

2000-10-10 Thread Laurie Griffiths

 What sort of a scale would use  ^G_A^B?

_E^F_B or _E^F_B^C definitely make sense (tonic is D).

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[abcusers] The Blarney Pilgrim

2000-10-10 Thread Phil Taylor

Here's the result of BarFly's analysis of the Blarney Pilgrim.

I used this transcription, from Henrik Norbeck:

X:235
T:Blarney Pilgrim, The
R:jig
Z:id:hn-jig-235
M:6/8
K:Dmix
~D3 DEG|A2G ABc|BAG AGE|GEA GED|
~D3 DEG|A2G ABc|BAG AGE|GED D3:|
|:ded dBG|AGA BGE|ded dBG|ABA GBd|
g2e dBG|AGA BGE|B2G AGE|GAG GFG:|
|:ADD BDD|ADD ABc|BAG AGE|GEA GED|
ADD BDD|ADD ABc|BAG AGE|GED D3:|

The first attempt looked very boring.  BarFly said it was in
G Major, and was heptatonic.  This is clearly wrong, as the
tune rather obviously starts and ends in the key of D.
However, the algorithm does get fazed by tunes with key changes;
it analyses the tune as a whole, and if there's a key or mode
change the results are unpredictable.  Sometimes it gives one key
or the other, sometimes both, sometimes a totally wrong answer.

So, I split the tune into its three parts and analysed them
separately.

Here are the results:
(The scores in brackets are a measure of the quality of fit;
when there's no clear winner the program may quote up to
four answers.)


Blarney Pilgrim, The (part 1)

Key/mode determined from tune (lower score = higher confidence):
G Major  (18.042)
D Mixolydian  (18.264)
A Dorian  (19.971)
D Dorian  (21.234)

G Major  Hexatonic ( -7) Ionian/Mixolydian

| . | . | | . | . | . . |

---
Blarney Pilgrim, The (part 2)

Key/mode determined from tune (lower score = higher confidence):
G Major  (11.356)

G Major  Hexatonic ( -4) Lydian/Ionian

| . | . | . . | . | . | |


Blarney Pilgrim, The (part 3)

Key/mode determined from tune (lower score = higher confidence):
D Mixolydian  (19.467)
D Dorian  (22.046)
G Major  (22.500)

D Mixolydian  Hexatonic ( -3) Mixolydian/Dorian

| . | . . | . | . | | . |



So, the answer appears to be that the first part is exactly split
between G Maj and D Mix (with A Dor and D Dor as less likely
possibilities).  The second part is solidly in G Major, and the
third part in D Mix. D Dor is also valid here because of the gap,
and G Major as less likely.

Furthermore, although the tune as a whole is heptatonic, the parts are
actually in different hexatonic gapped scales.

I also tried splitting up the first part into shorter sections to
see if I could define which parts of it were in which keys, but the
algorithm is a statistical one, and gives very erratic results if
you give it too few notes to work with.

On the whole, I'd say that Henrik was correct to assign it to
D Mix, even though it probably spends more of it's time in G.

Phil Taylor


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Re: [abcusers] Modes (was O'Neill errors)

2000-10-10 Thread Phil Taylor

David Barnert wrote:
I wrote:

 We've been through this before, and I realize I am in the
 minority on this, but I continue to feel that the K: field
 should describe the number of sharps or flats without naming a
 tonic and/or a mode.

A number of folks chimed in to comment that my comments might make
more sense if interpreted inclusively rather than exclusively.

I'm afraid that careful examination of my wording (specifically,
the use of "without") reveals that I cannot claim not to have been
thinking inclusively. So I guess my minority is getting smaller.

The only reason I don't advocate jettisoning the whole tonic/mode
format is that it would invalidate the large body of abc files
that already exist. But the first time I mentioned this (months
ago) I believe I said something like "Chris Walshaw made an
unfortunate choice in deciding that the K: field should contain
more information than the printed key signature does."

Tonic/mode does not affect playback or printing, which are the two
primary uses of abc (at least the way I and most of my friends use
it). It is of importance only to people (or machines) trying to
supply chords or create databases that include key information.

Phil Taylor (my hero) wrote:

 I'll repeat what I said before on this subject. If this change
 in standard becomes accepted, the vast majority of users will
 use it not just for the ambiguous tunes where it is appropriate,
 but for ALL transcriptions. We will have lost what is one of the
 major advantages of abc over conventional notation for the sake
 of dealing with a theoretical problem applying to a very small
 number of tunes.

Phil, it was with your words from last time around in mind that I
included the words, "I realize I am in the minority" in my
comments. Please clear up for me two points that I see as
obstacles to my accepting your viewpoint:

1) To what does this refer: "one of the major advantages of abc
over conventional notation"?

OK.  Perhaps my attitude towards this is conditioned by my early
experience of music.  I was taught music at school very badly,
and basically learned nothing.  I got a guitar when I was fourteen,
and taught myself to play by ear, because I couldn't make any sense
of the dots, and because none of the music I wanted to play at
the time was available at a price I could afford, I had no motivation
to learn.  I only learned to read music much later, when I was already
a proficient player.  I found it very hard going, and indeed I still
can't sight read anything at all complicated.  One of the things
that struck me when I did come to learn written music was that the
notation, while it contained something called a "key signature"
actually gave no indication of what the key was.  As far as I was
concerned "what key is it in?" was the first thing I wanted to know
about a new piece of music, and "two sharps" was not an answer.

I had learned music on an instrument which is totally chromatic,
to the extent that the black notes are not marked in any way as being
different from the white notes.  Electric guitar players tend to
avoid the open strings (because they sound different, and tend to
feedback at high volume levels) and if you do that, there is really
no difference between the keys of C and D - you just play the same
pattern of notes two places higher up the fingerboard.  What I needed
was to know the key note, and whether it was major or minor, and I
resented the fact that I had to play mechanically through the whole
tune several times and get the tune into my head before I could extract
that piece of information.  Without knowing the key, all I could do
was reproduce what was written on the paper - I couldn't harmonise
it or improvise around it or do anything creative with it.

So, when I came across abc I was delighted to find that it gave this
information upfront.  When I started to write abc software I discovered
that it is very easy to convert K:D into "two sharps", but _impossible_
to do the reverse conversion, so the suggestion that we should permit
K:^c^f as legal abc involves discarding vital information, and is
anathema to me.

I realise that placing this information in the notation places the
onus of figuring out the key and mode on the transcriber, rather
than on the reader.  This is particularly the case when the transcriber
is working from printed music.  I realise that many people who do
transcription resent the extra effort which that imposes.  However,
I feel that that's as it should be, since transcription is a job which
only needs to be done once, whereas the abc from that transcription may
be read by thousands of readers.


and

2) Is the answer to 1) so significant that it's worth severing the
tie between printed notation and abc?

Sorry, I don't understand this.  The tie is not severed;  whether
you write K:D or K:^c^f you can logically convert abc to printed
notation.

Let me remind those who don't know me well that this is not a
"sour grapes" attitude espoused by 

Re: [abcusers] Modes (was O'Neill errors)

2000-10-10 Thread Richard Robinson

On Tue, 10 Oct 2000, Phil Taylor wrote:

 I had learned music on an instrument which is totally chromatic,
 to the extent that the black notes are not marked in any way as being
 different from the white notes.  Electric guitar players tend to
 avoid the open strings (because they sound different, and tend to
 feedback at high volume levels) and if you do that, there is really
 no difference between the keys of C and D - you just play the same
 pattern of notes two places higher up the fingerboard.  What I needed
 was to know the key note, and whether it was major or minor, and I
 resented the fact that I had to play mechanically through the whole
 tune several times and get the tune into my head before I could extract
 that piece of information.

That's an interesting thought about the guitar; but it's true of all
instruments - as you say, it's information that isn't contained in the key
signature (unless you play the sort of music described by 'elementary
theory', where a key signature gives you a choice of 1 major key and one
minor, which helps to reduce the choices)


 I realise that placing this information in the notation places the
 onus of figuring out the key and mode on the transcriber, rather
 than on the reader.  This is particularly the case when the transcriber
 is working from printed music.  I realise that many people who do
 transcription resent the extra effort which that imposes.  However,
 I feel that that's as it should be, since transcription is a job which
 only needs to be done once, whereas the abc from that transcription may
 be read by thousands of readers.

As someone who's done a fair amount of transcription (and still has a lot
more to do "when the tuits arrive") - I agree. It can cost extra thinking
time, but it's part of the job. Also, it's a part of the job that I
particularly want done, since the ability to do things like search for
tunes on a particular tonic is ine of the things I really like about abc.

Incidentally (thinking of the amount of transcription I've done), I
finally got the update to http://www.leeds.ac.uk.music/Info/RRTuneBk
finished a few days ago. It's been in the works since August of last year.
And I'm not going to make it obsolete by typing up anything else for ...
ooh, days, I hope :)

-- 
Richard Robinson
"The whole plan hinged upon the natural curiosity of potatoes" - S. Lem


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