1999, the group consists of  M. Shadows  (vocalist),  Synyster Gates  (lead guitarist),  Zacky Vengeance  (rhythm guitarist), and  Johnny Christ  (bassist). Avenged Sevenfold ( Nightmare ) Nightmare  is the fifth studio album by American  hard rock  band  Avenged Sevenfold , released on July 27, 2010 through  Warner Bros. Records . It was