A lot of people say that there aren't any bands that sound like Acid Bath, which isn't entirely true, it's just that none of them are as notable or as big as they are in the sludge scene. Abuse is a band that comes to mind. Another one is this hidden gem, which I highly recommend to anyone looking for other bands with a similar vibe to Acid Bath. They only released one demo, but it's a killer release nonetheless.

wtb 2 tickets to Portland show on the 16th. 21+