Wacken Open Air is the biggest 3-day-rock- and metal-festival in the world. It's three days of raw energy, non-stop Heavy Metal music at full blast and 80.000 fans on a party frenzy. A true legend, taking place annually since 1990 … Alice Cooper, Ian Gillan, Henry Rollins, Lemmy Added on Amazon Prime 2022-05-27. Youtube Trailer