Superunknown is a grunge music album by Soundgarden released in the first half of the 1990s .
Grunge was commercially successful in the early–mid 1990s , due to releases such as Nirvana 's Nevermind , Pearl Jam 's Ten , Soundgarden 's Superunknown , Alice in Chains ' Dirt and Stone Temple Pilots ' Core .
Grunge