I really dont know what exactlly progressive stands for, but it seems like the bands I have heard of in that catagory were master musicans, breaking new ground with the use music methodolagy, the likes thats never been heard before. Going in directions that may rewrite the books. No, I dont know, thats just what comes to my mind when I here that word. But if I am rite you all better roll up your sleves, and start studing the vast rhelms of music. Even if you change your mind, and want to be just a normal "metal band" you should still try to learn all you can. The music bizz is not easy. Keep rockin, and progressin!