Hi Ronan, I'm lost, can you elaborate on what you mean by this (what
music, what ms?)
> the music is indeed lost, (ie the manuscript's back pages)

Karen, interesting ideas there! I always play caniad san silin
starting on g, but an octave higher than you, so as to avoid retuning
the Bb and so as to put the modal centre on G. In this case I would
say that that bass chord with a 6th is an important part of the
"measure" of the piece. But it's an interesting idea to play the two
comhluighe at the same time one with each hand...

What would you think its musical effect would be, over the rather
easier option of striking it with one hand and giving the other a
breather?

> Perhaps there was Irish music similar to the music in the ap Huw ms

Certainly there was , back in medieval times

> Where is this music? Has it all been lost?

Yes - probably it was never written down, and it is so old, so may
well have been obsolete by 1650 or so...

Its possible that Burns March is as old as that, and it seems to
share many features with the Robert ap Huw stuff. (see MS29 p. 30 - 31)

The earliest notated Gaelic harp music we have is 17th century (see
www.earlygaelicharp.info/sources

Simon