Remember that there were two types of musical
performance:- firstly: cerdd dafod (tongue music) - which
was the vocal delivery of poetry accompanied either by the
beating of a staff or by a stringed instrument; and secondly
cerdd dant - the non-vocal, purely instrumental
string music. Now as far as I am aware, all the references to
strings of horsehair on the lyre or the harp occur in contexts
that seem to be accompaniment ones - where a vocalist is accompanying
himself - and never in an expressly instrumental context.
Unfortunately, the most informative source
on early instruments of accompaniment - a poem by Dafydd
ap Gwilym or Iolo Goch (neither of whom were solo instrumentalists) -
has often been misinterpreted as a praising of a wooden harp
with horsehair strings for general use, when actually it is
in defence of the horsehair-strung lyre which had always
been traditional for accompaniment. There is no doubt
that the original, typical instrument of accompaniment was the
lyre, which began to give way to various types of harp in the
early 14th century. The type of harp eventually settled on for
accompaniment was one with a leathern soundbox (stretched
over a light wooden frame and laced at the back) with horsehair
strings and buzzing bray pins. This replacement for the lyre
was very different from the lyre, especially in that the lyre
probably had had no buzzing mechanism, but in the end at least
its horsehair strings were retained. The choice of the leathern
harp here is easily explained - both the lyre and the leathern
harp were light enough to be quite easily carried, and the vocalists
who used them could travel alone or act as servants and porters
to a poet or an instrumentalist, without needing to hire a porter
for themselves.
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