Mark-Great post! Very well written and documented. If bluegrass means "everything" then certainly the word means nothing.
I assume you take the very understandable position that bluegrass music started with the 1945 Bill Monroe band with Blue Grass Boys with Bill, Lester Flatt, Earl Scruggs, Chubby Wise, and Howard Watts.
I was wondering if you had a definition of "bluegrass" and also country music. Do you also feel that there is a roots of bluegrass and when would that begin?
-Richie