On the matter of whether one can be both a traditional and a revival singer I find myself in agreement with Mr. Jones and Mr. Carroll in believing that the "traditional" describes the provenance of the singer rather than both their provenance and their activity at a given time. Once someone has earned the right to be called a traditional singer they should not be deprived of that accolade when they sing something that they learned from outside their own culture any more than an artist should cease to be called an artist when they are washing up the dishes.

To throw another (non-culinary) analogy back into the melting pot: an omnibus is not reclassified as a car when it is only carrying a driver and an aeroplane does not become an omnibus when taxiing its passengers along the runway.