Jeffries System Duet Concertina


The Jeffries Duet System is a rarely-seen duet concertina system developed from the Anglo concertina keyboard rather than from the English concertina keyboard, since Charles Jeffries specialized in Anglos. But Jeffries also made instruments in other standard duet systems, including Maccann Duets.

jeffries-system-chords-tutor Jeffries Manuscript “Tutor” for Jeffries System Duet
by Anonymous (Jeffries Bros.?)
Undated manuscript (possibly as late as 1959) showing fingering and chords for a Jeffries System Duet, apparently made by the Jeffries company. The document is fashioned from a notebook with pages cut so that the keyboard diagrams can remain static at the top while partial pages of chords and instructions for various keys can be turned below. Unlike the early Jeffries Maccann manuscript tutor (c. 1910) written with a split pen and very finished, this document is written with a biro (ballpoint pen) indicating a much later date, and is very rough. Manuscript now in the collection of the Horniman Museum, London (Item CM C1080). The notebook is at present contained in an envelope along with a letter from Thomas Jeffries dated 1959 which may or may not be related.
Posted 15 February 2003
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clapp-jeffries-interesting A Jeffries Duet—Interesting Instruments
by Polly Clapp
“The initial response of anybody picking up a Jeffries Duet for the first time, or indeed looking at a keyboard diagram, is bewilderment that anyone could ever learn to play such a system. There seems to be no obvious logic, unlike the other duet systems, and the keyboard is often likened to a typewriter! However, astute anglo players will soon realise that there are similarities betwen the Jeffries Duet and the Anglo.” [From the article.] As published in Concertina Magazine (Australia), 12 (Autumn 1985), pp 2-4.
Posted 15 February 2003
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robertshaw-jeffries-page Keyboard Diagrams for Jeffries System Duet
by Nick Robertshaw
Diagrams of the note assignments on a 51-key Jeffries system duet played by Nick Robertshaw, one of the very few players of the system.
Posted 15 February 2003
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hayden-all-systems-duet-workshop All-Systems Duet Workshop Tutor
by Brian Hayden
Tutor for a workshop on how to play duet concertinas of all systems. Begins with notation, fingering, and chords for Maccann Duets, Jeffries Duets, Crane (Triumph) Duets, and Hayden Duets. Tunes of progressive difficulty, with increasing number of notes and then in keys with increasing numbers of accidentals, all written in notation based on the treble clef. Notes on chord patterns and on strategies for melody and accompaniment applicable to all systems of duet concertina. Presented to The West Country Concertina Players, 1994. 20 pages.
Posted 15 August 2003
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pricelist-vickers-1935 J. J. Vickers Concertinas Pricelist circa 1935
collected by Chris Algar
Dealer's pricelist from J. J. Vickers listing models and prices for English, Duet, and Anglo concertinas, including instruments made by C. Wheatstone & Co., Lachenal & Co., Jeffries, Jones, Shakespeare, Case, Chidley, Crane, and Crabb. Dated c. 1935 by internal evidence.
Posted 07 March 2005
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jeffries duet
Jeffries System Duet Concertina
(from Nick Robertshaw)
based on the Anglo keyboard