The video at the link below has been posted on the David Sylvian Tumblr page. Some intriguing pictures have been turning up on here just recently - including some rare shots of David with Pierre Barouh. Whoever maintains this page appears to be well connected and have access to some intriguing material.
The video is a reading of the R S Thomas poem 'The Island' - read by the poet himself. There is a musical accompaniment... ..could this be by David?
Interested in views...
http://davidsylvian.tumblr.com/post/76416139346