There are at least 9 artists that go by or are known by a variant of the name "Oz": 1. Oz is a Finnish heavy metal band in the 80's. They're not very well known these days but they were among the first and most succesful bands and did some solid groundwork for the Finnish metal scene that blooms today. The band retired after releasing the "Roll the Dice" album, but reunited, located in Sweden, in February 2010. The band has, until this day, released 5 studio albums