Countess.
Sorry, I should have specified song, not music - we've got it wall-to-wall here in the West of Ireland. Have to admit I'm not well up on the English music scene.
Captain-
Two of those you mention are Irish - and revival. While the Irish language tradition is doing well-ish, the English tradition has all but disappeared in Ireland.
The others are song carriers rather than traditional singers - I'll be happy to debate that with you sometime.
The tradition was an essential cultural part of a way of life that has long disappeared.

Jim Carroll
PS It's very refreshing to be allowed to make a controversial point without howls of 'purist' and 'folk police'.