Black metal is divided into two waves. The first wave began in the early 1980s by bands such as Venom, Bathory, Hellhammer, Celtic Frost and Mercyful Fate. Venom's first albums, Welcome to Hell and Black Metal are usually said to be the first black metal records. The second wave is the most popular wave of black metal and it started in the early 1990s. It started from Norway and includes bands such as Darkthrone, Enslaved, Burzum, Satyricon, Mayhem, Gorgoroth, Immortal, and Emperor.