[5] He moved to Orange County, California[6] at age 19 in 2000,[3] with pop/fusion group Square, which also featured vocalist/keyboardist Sean Beste and future Maroon 5 guitarist, James Valentine.

[3] While in Orange County, Steen worked with various artists, including Audiovent, between 2003 and 2004, and their subsequent spin off band Agent Sparks.

[8] He also played with The Elected, The Summer Obsession, Start Trouble, Phantom Planet,[9] Suburban Legends, Mt.

[11] In 2005, Steen joined Reel Big Fish,[12] leaving Agent Sparks to do so.

Steen has stayed with America to the present day[13] with his position in Reel Big Fish being filled by Edward Beach of Suburban Legends.