Well, after looking through my folder (and being reminded that I definitely need some kind of classification system), I’ve found 50 (plus three more of him playing the piano, drums and air drums, respectively :)).
Since it’s kind of a high number, I can’t upload them all. If you do wanna see them though, I could make a “collage” and if you want one of them in original size, then I can upload it. ;)
He sang lead vocal on “The Muckin’ o’Geordie’s Byre”, “Now Westlin Winds”, “These Are My Mountains” and “The Water is Wide”. But on most songs, you can hear him sing in the background. :)