Ozzfest is an annual tour of the United States (and in some years, Europe) featuring performances by many heavy metal, hard rock, and even hardcore groups. It was founded by Ozzy Osbourne and his wife Sharon Osbourne, both of whom also organize each yearly tour with their son Jack Osbourne. The Ozzfest tour has featured bands of a variety of genres within heavy metal and hard rock, including within alternative metal, thrash metal, metalcore, hardcore punk, rapcore, death metal, gothic metal and black metal. Ozzy Osbourne himself, as well as his band Black Sabbath, have played the tour several times over the years.