A few which have really brought a lump to my throat and just the tiniest trickle from the corner of my hard-bitten cynical old eye -
https://www.youtube.com/watch?v=HApy-Xoix-g
https://www.youtube.com/watch?v=VFMNZXWavmQ
https://www.youtube.com/watch?v=c7tzi8wkYgI
Yes - Peter Hamill - always quite a 'difficult' listen. Always loved his Fool's Mate album though -
https://www.youtube.com/watch?v=y5bI6DKR7g8
......and he could be quite weird in his Van der Graaf Generator days too -
https://www.youtube.com/watch?v=6CuOld2ldrc