I guess it's a well known fact that Mr Fripp (bless him) basically quotes Holst's "Mars" from The Planets Suite almost note for note on 'The Devil's Triangle' and even had the nerve to give himself song writing credits for it. Very cheeky as the statutory copywright period of, I think, 50 years hadn't expired.

The Doors were taken to court (and lost) over 'Hello I love you' for plagiarising The Kinks 'All day and all of the night'.