'WASP' is the only ethnic term that is in fact a term of class apart from redneck which is another word for the same group but who are in the lower social strata so it's inexplicably tied up with social standing and culture and history in a way that the other hyphenations just are not.
Band members have a special bond. A great band is more than just some people working together. It's like a highly specialized army unit or a winning sports team. A unique combination of elements that becomes stronger together than apart.