 Newly signed to Warner Bros. Records , Down once again reformed in 2006 . The band wrote an album over the course of a year . The lyrical content of Down III : Over the Under covers subjects such as the breakup of Pantera , the murder of ex @-@ Pantera guitarist Dimebag Darrell , the band 's anger at the aftermath of Hurricane Katrina , and Anselmo 's recovery from back surgery and drug addiction . Debuting at number 26 on the Billboard 200 , the album was released on September 25 , 2007 , and received generally positive reviews . Kirk Miller of Decibel Magazine said of the album , " for almost an hour , it 's like the metal world was set right again . " 
