OSI

OSI is an American progressive metal band formed by Fates Warning guitarist Jim Matheos in 2003. He named the band after a short-lived U.S. government agency named Of

OSI is an American progressive metal band formed by Fates Warning guitarist Jim Matheos in 2003. He named the band after a short-lived U.S. government agency named Office of Strategic Influence.

Matheos recruited Kevin Moore, who had played keyboards on various Fates Warning albums in the 1990s and early 2000s, and was a founding member of the band Dream Theater before he quit in 1994, to play keyboards. Independently, Matheos also asked Dream Theater drummer Mike Portnoy to lend his talents to the project, who accepted without knowing that Moore was to be involved. When they recorded a cover version of "Set the Controls for the Heart of the Sun" in the studio, it was the first time they had collaborated on a piece of music in almost ten years.