Currently Im playing in a 4 piece metal band with one guitarist and one singer. Now the problem is, that most of my influences come from bands with two guitarists, (panteras one of the exceptions) and I find that its a whole other ballgame backing up one guitarist, and playing the full role of 'rhythm'. When my band covers songs by bands like Lamb of God, although for the most part their songs can sound decent with one guitar and bass, for certain parts it sounds empty, not as full. So I guess what I'm really asking, is how did Pantera do it? How did they sound so full, especially live? Im planning on bringing some distortion into my tone in the next few weeks, but apart from that, is there any tips you can me? My guitarist writes lots of fast riffs, more so then chord progressions, and Im not sure if I should be backing with progressions, or just playing what he plays.