I think that could be said of any really tight, good group, but I will admit that the country/bluegrass guys want to get to business right away more often than not. They seem to take it very seriously, until they heva it down, then it's party time on stage. Darn thing is, some of those folks have their fingers moving so fast they have to know it cold. Mistakes in professional bluegrass or country don't happen all that often. Kinda like string quartets or solid studio musicians. Mistakes are a waste of time and money, so they just don't make them.