'S true that large groups of musicians don't tend to improv together well unless they're used to each other's styles...

But, in defense of the drummers, unless I misread BBonnie's original post, it sounds as if they had begun by offering a beat to be followed, and the guitars just didn't follow it.

It all goes back to preschool... sometimes you wish people would think of the music as the toys, and be prepared to share. Hogging the tune by refusing to join with those around you is just as bad as the schoolyard bully who won't let the rest of the class play on the slide...

M