Crossover? Hmmmmm, well it DEFINITELY ain't 'world', innit . . .

The cut-off point has to be arbitrary, to a degree, when determining what goes in which box in a retail record shop which is, after all, what we are talking about. I can see no justification for stuffing bluegrass (a modern hybrid form of bits of many traditions) into the 'world' box when, doubtless, one already exists labelled 'bluegrass'. Nickel Creek, however, belongs in the 'crap pop' section, or better still, the bin (erm . . . that's 'trash can' or 'garbage' to you lot over there).

It's not a matter of thinking whatever you want. Those who stock the racks have got to agree on what to put where or else no-one will ever find anything.