QUOTE (MichaelB @ Jun 27 2008, 04:26 PM)

I hear a Triumph duet is easier and more logical to play than a McCann.
Does anyone have an opinion on this?
Thanks,
MichaelB

Depends what you mean by logical, I suppose!
There's a nice axiom I heard recently: Whatever is, is logical!
Sounds like a paradox, doesn't it? The English concertina definitely IS. The Anglo concertina IS, too. But they can't both be logical, they're so different!
What instruments are undisputedly logical?
Well, the most primitave ones, like the harp and keyless flute. The converging sides of the harp make each string a bit shorter than the last one, so its pitch is higher, so we have adjacent notes of the scale on adjacent strings. Logical!
On the flute, we get the successive notes of the scale by uncovering successive holes. Equally logical.
With the fretted strings, each adjacent fret raises the pitch of the string to the adjacent semitone. Logical plus chromatic!
But is that logic? Is it not more a matter of physics? A shorter string (same weight, same tension) gives a higher pitch; a much shorter string gives a much higher pitch, etc. Same with a shorter air-column in a flute. I don't perceive much logic in my autoharp, banjo or tin whistle. More an instinctive grasp of the physics involved, my instinct being conditioned by empirical observation during childhood.
So is the concertina different? More logical/illogical, depending on the system?
The big difference is that the concertina is basically round, with a basically rectangular keypad. The architecture allows any button to be associated with any note at will. So there is no physical reason why adjacent buttons must produce adjacent notes. Or why one button shouldn't produce two notes, or two buttons the same note.
Another difference is that the concertina is held by the hands that play it. So the hands can't move relative to the instrument, like a guitarist's or a pianist's can - so the button arrangement must be so compact that you can reach all the buttons by just moving your fingers. That's logical!
So there's the physical premiss that the scale has to be compact, and the second physical premiss that you're free to choose what note goes where.
The first solutions were both logical: the German bi-sonoric system reduced the 8 notes of the octave to just 4 buttons; the English system shared the octave between the hands, so each hand only had to press 4 buttons. Both very neat, obviously, because they're still with us!
But neither system is instinctive or intuitive!
Give a musical person any instrument he is not familiar with, and he'll make a good stab at getting the diatonic scale together. Unless the instrument is a concertina - then he's mystified!
With string and woodwind instruments, the fingering follows directly from the physics. Shorter is higher. We can see what we're doing. With the piano we can't, but we soon find out that the short strings are on the right and the long strings on the left, and that the action goes straight from key to string, so we can "see" the semitone intervals. So we can rely on intuition.
The action of the concertinas, on the other hand, joins buttons and reeds arbitrarily. The designer gave up the "natural" sequence and thought one out from scratch. Obviously, if the players were to grasp how the systems worked, there had to be some "logic" in them to replace the instinctive approach to other instruments.
Then came the duets, which were intended to combine the "high-right, low-left" of the Anglo with the chromatic layout of the English. It seems to me that these systems were conceived as variants on the existing systems, rather than as totally new approaches (except perhaps for the Rust "piano-concertina", which seems to fall down on compactness). The Maccann still has the zig-zag among 4 columns that the English had, albeit with the 4 columns on one side; the Jeffries seems to have the Anglo's "press" notes in one row and its "draw" notes in another.
So players of other instruments are still mystified by them, but ex-players of the older systems "instinctively" find something familiar about them.
But what about the Crane?
After studying button layouts till my head swam, it seemed to me that the only duet system for me would be the Crane. Because, if you look at the rows as crescents, they have adjacent steps of the scale of C on adjacent buttons. To keep the rows short enough to manage with 4 fingers, the sequence breaks after 3 and starts in the next row. I found this "logical", but I think it's more "instinctive". And my instincts were conditioned early on by the mandolin. On it, you finger three adjacent notes with adjacent fingers, then skip to the next string. If you need an accidental, it's right next to its base note. Like on the Crane.
So perhaps the concertina systems have little to do with logic (or lack of it), and more to do with conditioned reflexes. None of them have much spatial relationship to the scale, so "unconditioned" reflexes are no use. Depending on where the conditioning took place, one or the other system will APPEAR more natural to YOU. Perhaps you're supposed to go from English to Maccann, from Anglo to Jeffries - and the Crane? From the fretted strings?
Unfortunately, I have no opportunity to test the various systems. Perhaps it's all the same, and whatever system you pick up, you manage to play.
But I can't help feeling that the Crane layout is somehow "tidier", more regular.
I'd like to hear who migrated from what to what, or who started off with a duet, etc., and what you encountered on the way.
Cheers,
John