Mine is Mech if I'm not mistaken they are polish and they have a few songs in english.They are rather old and my two favorite songs by them are "ilem z diablem bruderszaft" and one of there english songs "ainkiller". and when I posted this I was actualy listening to "brudna muzyka"
Luc Arbogast again frence (sorry about that, they just have some great musicians) he is a mezzo-soprano that sings original medieval songs. he is used to be a street artist but since he got a little famous on youtube. he now has 4 albums and occasionally he does a concert. but most of the time he is still a street performer.
(be warned, dont listen to him to much. i guess it will damage your ears.)