Bando-Piano
Piano-System
unisonoric, logical
(Collection Oriwohl, Nr. IV-60)
Manufacture: Co. Joseph Wiesner (Munich) around 1935
Draft: presumably Gebrüder Wiesner, presumably around 1910, (H: 28cm)
Range: C - fis3
One of the early models with transfer of the piano system to the bandonion.
The problem with the bandonion is the 'missing' thumb, especially for legato playing beyond four fingers. The non-applicable thumb underset from the piano makes it difficult or even impossible to play tied notes.
Left side: C - gis
The 2 inner rows are identical and consist of whole tones. The 2 outer rows are also identical and consist of semitones according to the piano system. The reason for the identical parallel rows is their different chorus assignment:
Row 2/4 is 2-choirs (8'+8')
Row 1/3 one low choir (16')
The latter are mechanismally coupled with row 2/4 (but not vice versa), so that with row 1 and 2 three choirs (16'+8'+8') sounds.
There are actually register buttons or lever for such switching. Here, however, without such the choir number can be changed from note to note in the middle of the performance which was presumably used for design the presentation..
Left side: g - g3
Two identical parallel rows with different chorus assignment
Right side: g - g3
There are no linked rows on the keyboard on this side, even if the appearance of the keys is similar.
The two inner rows are a continuous piano system to the lower end of the manual. The lowest whole tone is e2.
The two outer rows do not begin with the following note f2, but repeat the last lower four notes of the inner rows. Only from the fifth key in row 3 does f2 continue to the lower end of the manual.
The top key of row 4 activates the air flape.
Right side: g - g3
Piano system with framed tone repetition
The manufacturer and presumably developer:
"Josef Wiesner
München 23
D.R.P."
Advertisement for a predecessor model with square keys in an issue of Gut-Ton from 1925:
"In this new design, the manufacturer has created an instrument which is of inestimable value for both domestic and professional value. Since the arrangement of the keys is completely like that of a piano, the playing style is the same way as the piano. All piano sheet music can therefore be without modification. Anyone with knowledge of sheet music and piano players will welcome this instrument as a long-lost one...
Universal instrument for home, travelling, visiting, cinema and Schrammel bands. The weight is only 7kg. The price is calculated to be lowest and affordable for everyone"
"Accordeon with Belgian "fingering"
Concertina, of foreign origin, built by Father Wilop
(One could see in this instrument the future bandonéon)
(Collection Hohner)"
There have been several attempts to transfer the piano key order to the bandonion.
