Original sentence: Four American bands—Anthrax, Megadeth, Metallica, and Slayer—are credited with pioneering and popularizing the genre, and they have come to be called the "Big Four of Thrash"
Edited sentence: Four American bands—Metallica, Slayer, Megadeth, and Anthrax—are credited with pioneering and popularizing the genre, and they have come to be called the "Big Four of Thrash"