'Ave Maria? Freude schöne Götterfunken? Das Forelle? Johann Sebastien Bach? Stockhausen? Walton's Belshazzar's Feast? Handel's Messiah? Paradise Lost? The Faerie Queene? Mick Jagger? The Who? Under Milk Wood? The Iceman Cometh? Eskimo Nell? A Couple of Swells? Rhapsody In Blue? My ♥ Belongs to Daddy?.................'

And why?

cos it sounds like a decent night out to me!
Seriously, the point is that people make music out of what they've got. and nowadays people have access to all that stuff and more. and they turn up at your door, when you run a folk club having made music -in much the same way that poor Americans made guitars out of cigar boxes - all they had. but nowadays people have lots of stuff to draw on.
they make music informally. it is bastard process. that is how every folksong in the world ever came to be written. jim seems to think that breaking away from singing the old songs makes people slaves and pawns of the music industry. nothing could be farther from the truth.