O.S.I.
The word "supergroup" has often been used to describe O.S.I., one of the best-known progressive metal/progressive rock acts to emerge in the United States in the 2000s -- and considering who has been…
Active
2000s - 2010s
The word "supergroup" has often been used to describe O.S.I., one of the best-known progressive metal/progressive rock acts to emerge in the United States in the 2000s -- and considering who has been…
