Avenged Sevenfold cite Dream Theater as their musical influence .
Members of Avenged Sevenfold cite In Flames , Metallica , Iron Maiden , Megadeth , Slayer , Elton John , Leonard Cohen , At the Gates , Helloween , Dream Theater , Pennywise , NOFX , Pantera , Def Leppard , Guns N ' Roses , The Beatles , Black Sabbath , Led Zeppelin , and the Rolling Stones as influences .
Avenged Sevenfold