Erard partial-double-action harps
Dear Robert and all,
I am placing this under this heading not because it pertains directly to a harp numbered 1955 but because it is consecutive upon Robert’s helpful mentioning (4 Feb 2019, above) of Erard’s partial-double-action harps (made between 1813 and 1827), with two strings in each octave group (D and A) served by double action and five by single action.
Referring to the historical documents made available on the website of Clive Morley harps, I note that in what is described there as the 1st loan exhibition ('an unknown exhibition of stringed instruments') to which Joseph George Morley (1847-1921) loaned instruments for exhibition (http://0035926.netsolhost.com/Documents/1stLoanExhibition.pdf), the last item in the list of harps and related instruments, exhibit no. 123, is described as 'Erard’s child's sized PEDAL HARP, speciality, Single action on five notes, double action on D and A' (p. 28). As no measurements are given, it is not possible to tell which of Erard's three sizes this example was, although the description ‘child’s size’ might suggest the small model or the intermediate one.
The published pdf facsimile of the catalogue, which comprises just the section pertaining to harps and kindred instruments, does not include the title page, nor is the full title of the exhibition given. I have been unable to identify this catalogue among those of late nineteenth-century British loan exhibitions. As the 2nd loan exhibition, an excerpt of whose catalogue is also available (http://0035926.netsolhost.com/Documents/2ndLoanExhibition.pdf) was in 1894, it is implied that the first exhibition was earlier. I wonder whether anyone recognises the first catalogue and can provide particulars of date, organisers, and place of exhibition. Having checked a few accessible catalogues, I can confirm that none of the following are the same:
1. Guide to the loan collection and list of Musical Instruments, Manuscripts, etc. [edited by A. J. Hipkins], International Inventions Exhibition of 1885 (London: W. Clowes & Sons, 1885). This exhibition was held in the Lower Rooms of the Royal Albert Hall.
2. Crystal Palace. International Loan Exhibition of Musical Instruments, July to October, 1900. Official catalogue, with introductory article by Rev. F. W. Galpin... (Sydenham: The Crystal Palace Company, 1900).
3. A Special Loan Exhibition of Musical Instruments, Manuscripts, Books, Portraits, and other mementoes of music and musicians, formed to commemorate the tercentenary of the granting ... of a charter ... to the Worshipful Company of Musicians in 1604 ... June-July 1904 [A catalogue] ([London]: Worshipful Company of Musicians, [1904]).
J. G. Morley loaned several instruments for the second and third of these exhibitions. If the date of the ‘1st loan exhibition’ could be ascertained, it might help to trace the partial-double-action harp loaned the Morley ledgers.
One such harp, in the Kunsthistorisches Museum, Vienna, is illustrated in Laure Barthel, Au cœur de la harpe au XVIIIème siècle (n.p.: Garnier-François, 2005), p. 138. Not surprisingly for a small instrument, it has 41 rather than the usual 43 strings; the lowest, which has no fourchette, is GG, so the top note is the normal eb''''. As the open ‘A’ and ‘D’ strings were apparently to be tuned a semitone lower than their normal single-action counterparts (this is implied by their sounding lengths in relation to their neighbours), they have a second, gapped row of fourchettes above the main row, which latter corresponds to that of the normal single-action instrument. The first five fourchettes (giving AA, BB, C#, D#, and E, assuming E flat major tuning) are placed near the lower edge of the neck; then, as in the double-action harp, there is an upward step in the line of fourchettes, corresponding to the same E-F transition from overwound to plain gut strings as in the 43-string harp.
Two features except this design from the principle of modular interchangeability of single- and double-action neck mechanisms found in Erard’s harps from about 1814 onwards: (1) the neck, though just wide enough to accommodate two rows of fourchettes, the nut pins, and tuning pins (the AA, D and A tuning pins are necessarily very close to the upper edge), is significantly narrower than that of the fully double-action harp; and (2) in order to achieve a reasonably consistent angle of side-draught from nut pin (arranged in two rows, separated by the linear equivalent of a semitone) to tuning pin, the pattern of spacing of the tuning pins (in a single row, apart from AA, D and A), though rational, is markedly uneven, in a way which would serve the continuous nut line of either the single or normal double action instrument poorly.
PS. Regarding the tuning and intended use of the 'A' and 'D' strings, with their apparent downward extension by a semitone in relation to the single-action harp (as implied literally by the sounding string lengths), adherence to the common E flat major tuning for the single-action-like scale defined by the C, E, F, G, and B nut pins and the co-linear (i.e. spatially uppermost) fourchettes on the A and D strings would give this open-string tuning: Eb, F, G, Abb, Bb, C, Db. While it would be advantageous to have both Db and D#, to gain Abb in preference to A# would seem to be anomalous, so it seems likely that the open A string would commonly have been tuned to the flat rather than the double flat.
As this kind of instrument, explicitly intended for young players, was effectively an extended form of the single-action harp, lacking the full capacity of the double action, it would be helpful to have the insights of experienced players, familiar with the repertoire and techniques of the second decade of the nineteenth century, as to how the additional notes afforded by the A and D strings might have been used.