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Avenged Sevenfold (sometimes abbreviated as A7X) are an American rock band from Huntington Beach, California, formed in 1999. The band's members are lead vocalist M. Shadows, rhythm guitarist and backing vocalist Zacky Vengeance, lead guitarist and backing vocalist Synyster Gates, bass guitarist Johnny Christ and drummer Arin Ilejay.
They are known for their diverse rock sound and dramatic imagery in album covers and t-shirts. Avenged Sevenfold emerged with a metalcore sound on their debut Sounding the Seventh Trumpet but their style had evolved by their third album and first major label release, City of Evil, into a hard rock/heavy metal sound. The band continued to explore new sounds with their self-titled release and enjoyed continued mainstream success before their drummer, James "The Rev" Sullivan, died in 2009.