That is a good video. I found this on the Marquess of Winchesters Regiment website as well, they have a little bit on Drummers:
http://www.marquisofwinchesters.co.uk/Roles-Drummer.html If we could get permission from them to use the sounds of the drums from that video then that would be good. I don't know if drum calls varied between Royalists and Parliamentarian or even on a regimental basis. In the Napoleonic Wars it was standard across pretty much the whole army although this is the seventeenth century where, till the New Model came along, there was no standing army.
I notice as well that the drums are much larger than those used in the Napoleonic Wars.
I wonder as well, what about trumpet calls for the cavalry?
EDIT: From 'The English Civil War, 1642-165, An illustrated Military History', page 92:
'Musicians traditionally wore elaborately-laced uniforms; for example, in 1587-8 Norwich purchased for their drummer a green kersey coat with eleven yards of lace and six yards of 'pointing', and spent 10s. on five yards of green and white Levant taffeta for their flute player.'
Another interesting part:
'Fifers occupied a less important place, Turner remarking that 'With us any Captain may keep a piper in his company, and maintain him too, for no pay is allowed him, perhaps just as much as he deserveth.' '
It also goes on to say that the King's Lifeguard probably had the Royal Coat of Arms painted onto their drums. Is it possible to introduce unique drums for each regiment or is it done as a whole?