Quite right Palladium, it's the late Kenny Wheeler on flugelhorn, a wonderful musician and an absolute favourite of mine...anything with Kenny Wheeler on is a class recording, IMHO.
Bill features on half a dozen tracks on Sylvian's 'Gone To Earth', indeed he co-wrote 'Answered Prayers'...all great stuff.
A really moody, atmospheric song, with that remarkable combination of trumpet (flugelhorn?) and Bill's guitar. Good to be reminded of it.