Claim: Avenged Sevenfold didn't release any studio albums.
Evidence: Despite his death , Avenged Sevenfold continued on with the help of now-former Dream Theater drummer Mike Portnoy and released and toured in support of its fifth album Nightmare in 2010 , which debuted on the top spot of the Billboard 200 , Avenged Sevenfold 's first number one debut.
Nightmare is the fifth studio album by American heavy metal band Avenged Sevenfold.