This thread springs from reading the other one currently going on in this forum about Bill Monroe the man. I'm more interested in hearing peoples take on what Bluegrass music is, as defined by Bill's innovations. I am asking for responses in a musical context, not about his personality. I know that Neil Rosenberg and others have written books that will satisfy this question. However, I've found this forum a great way to get multiple perspectives, so if this interests you too, then let's see where it goes.
In the forum it's possible to post musical clips that demonstrate what a person is talking about, and I would find this most helpful in understanding Bill's music.