Having hung out and jammed with some bluegrass players ( Ireally am an acoustic guitar player at heart)I must agree with Zack to some extent. Although some of the absolute best players I have ever heard are BG players, the tunes do very similar to me as well from one to another. There is not enough variety in the genre to me anyway.
Jazz is one of my big things as well and there are several flavors of jazz, so the comparison does not equate to me.....unless you were to say Dixieland Jazz to me, in which case I would ALMOST equate that with the bluegrass comparison, in that I do not enjoy it much and it all sounds very similar to me one tune to the next.
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jam on,
Terry
http://imjazzed.homestead.com/Index.html