Beg To DifferProng: Tommy Victor (vocals, guitar); Mike Kirkland (vocals, bass); Ted Parsons (drums, background vocals). Prong's once diffuse, post hardcore rumble solidifies into a tightly disciplined thrash metal attack on their first major label release, Beg to Differ. Also a more democratic affair than later efforts, the album finds guitarist Tommy Victor and bassist Mike Kirkland alternating lead vocals as well as writing credits. And drummer Ted Parsons is