Metalcore is a broad fusion genre of extreme metal and hardcore punk. The name is an amalgam of the names of the two genres, distinguished by its emphasis on breakdowns, which are slow, intense passages that are conducive to moshing. Pioneering bands, such as Hogan's Heroes, Earth Crisis, and Integrity, lean more toward punk, whereas latter bands—Killswitch Engage, Underoath, All That Remains, Trivium, As I Lay Dying, Bullet for My Valentine and The Devil Wears Prada—lean toward metal. Sepultura, who has been credited to "laying the foundation" for the genre, and Pantera, who influenced Trivium, Atreyu, Bleeding Through and Unearth, have been influential in the development of metalcore.