QUOTE (David Levine @ Oct 27 2008, 02:47 PM)

QUOTE
In this situation I think it is really helpful to know about the concept of rows: The middle row is the main row, the lower row is an addition you use when the melody moves onto the new key. (And of course you can misuse it to play more smoothly, if you want to reduce bellow changes.) The upper row is in fact no row but only a collection of helper buttons.
This is really a gross oversimplification. The bottom row is in a separate key and is a scale unto itself. It isn't just "an addition," as you say. It makes the concertina much more interesting and flexible.
I use the lower row
all the time, in every tune I play. And please tell me how it is a
misuse if you use the bottom row to play more smoothly?
And the top row is more than just "helper buttons." They give you the accidentals, like the black keys on the piano. You need them for playing in keys other than C, G, and their related minors. Are the black keys on the piano also only "helper buttons?"
Peter is absolutely correct when he says:
The instrument should be considered as a keyboard, albeit with some notes in unexpected places.I don't want to be mean to you, but how long have you been playing and how accomplished are you that you are so free with bad advice? Usually people should be playing at least five years before they give bad advice. Until then you only be receiving bad advice, and not handing it out.
David,
If I may throw your own phrase back at you, I think you're over-simplifying here!
"A keyboard with some notes in unexpected places" would be a good description of a Maccann duet. Englishes and Crane duets are like keyboards, with the naturals together, and the sharps and flats where you'd expect them, like the piano. They are all bisonoric and fully chromatic, and one dot on the stave means one particular button (excepting the LH/RH overlap on the duets).
The Anglo-German is different. It is bisonoric, so the "one dot, one button" principle does not apply. It is also a diatonic instrument; that is, it is not built on the principle of a keyboard-style C-major scale with handy accidentals, but rather on two 7-note diatonic scales overlapping by a fifth (C/G, G/D, etc.).
These two systems reflect two philosophies for two clienteles: The fully chromatic English, with its button arrangement reflecting the lines and spaces of the stave, aimed at the bourgeois amateur who had had piano lessons; and the diatonic layout reflecting the I-IV-V7 harmonies and modulation along the Circle of Fifths typical of German popular music, aimed at the emerging proletarian amateur musician who could not afford tuition.
Bearing this in mind, it is clear that "the Row" is a basic concept in the diatonic layout, which is the German gene of the "Anglo-German" concertina. The Richter push-pull scale limits the harmonic choices for a given melody note to a couple of chords, which can be selected easily by anyone with a reasonably musical ear. And the stagger of one fifth between the rows means that this factor is carried over when a tune modulates.
I would agree that the inner row of an Anglo is not an add-on, but rather a complement to the "main" row. It can also be used for playing in a different key - useful in a song accompaniment situation, because if a singer can't reach a song in one key, he or she can usually reach it in a key a fifth higher or a fourth lower.
And, because the scales of C and G have only one note different (F/F#), the combination of the two scales provides alternate fingerings that make more sophisticated harmonies possible.
When the Anglo-Chromatic with its third row appeared, this was not merely an "accidentals" row - it offered interesting, additional alternate fingerings that were not available with 2 just rows. It thus supports the playing of richly harmonised music "along the rows" in the home keys. (When I play a harmonised piece in C major or G major, I also use all 3 rows of my Anglo.)
Had the intent been to make the German system chromatic, surely a second row in C# would have been more pertinent. But this would have cancelled out the "automatic" modulation, and confined the "automatic" harmonies to just one key.
If, however, a diatonic instrument like the Anglo concertina by a quirk of history comes to be used in a "foreign" musical culture like that of the West of Ireland, where the music is traditionally purely melodic, and the I-IV-V7 cadence is not of central importance, and the modulation up a 5th seldom happens - then the rows lose their significance. For someone playing in this style, the Anglo may appear as a C-major keyboard with the sharps and flats in unexpected places. It may even be beneficial to him to think of it as such.
But the diatonic free-reeders are not defined by ITM and Tango exclusively!
Cheers,
John
PS: Ah, yes! My credentials: I've been playing Anglo concertina and Bandoneon (neither ITM nor Tango!) for some 40 years now, and I'm just starting to explore the Duet ...