This thread raises - speaking only for self, you understand - an interesting point, and one with which I might, whilst still in HE (thank the gods I am not!) have tormented my Tutorial students :

Start with a 'traditional ' tumn, such as 'Napoleon's Retreat' and then do with it what Martin Carthy did with his awesome version of 'King Henry' (not sure whether this was on 'Landfall' or on

'Sweet Wivelsfield', but a fellow 'Catter will tell me, doubtless) ; or 'Thomas of Winesbury' to which Richard Thompson set the lovely, haunting words of 'Farewell, Farewell' ('Liege and Lief', weren't it ?);

and where, and in what, does Copyright arise ?