premise: Avenged Sevenfold is by Alice in Chains.
hypothesis: Avenged Sevenfold ( sometimes abbreviated as A7X ) is an American heavy metal band from Huntington Beach , California , formed in 1999 . Avenged Sevenfold is the eponymous fourth studio album by American heavy metal band Avenged Sevenfold , released on October 30 , 2007 by Warner Bros. . Hail to the King is the sixth studio album by American heavy metal band Avenged Sevenfold . James Owen Sullivan ( February 9 , 1981 -- December 28 , 2009 ) , professionally known by his stage name The Rev ( shortened version of The Reverend Tholomew Plague ) , was an American musician , composer and songwriter , best known as the drummer , composer , songwriter , backing ( occasional co-leading ) vocalist and founding member for the American heavy metal band Avenged Sevenfold .