Within the UK, I'd suggest "Socialist" is more devalued than "Radical" so I'd go with Radical as a description of Bragg - though he still styles himself as Socialist.

But on what basis does Fedele claim that Bragg regards the traditional words of "The Internationale" as "old-fashioned and unsingable"? As far as I can tell, he seeks to complement rather than replace the original.

Fortunately the Bragg site seems more reliable than Fedele's ramblings . . . (though to my hearing SOME of the Guthrie settings come across as pretty well unsingable, but that's another matter).

And note that Bragg is booked to appear at the UK's two top Folk festivals this summer - Sidmouth and Cambridge.

G.