Before Michael Sweet became a part of Boston, he had established himself as part of the Christian rock group Stryper. The band's first album The Yellow And Black Attack was released in 1984 and the band has had numerous albums since then, up to the most recent album, Murder By Pride, released in 2009.

Stryper has performed the song Peace of Mind with Boston's Tom Scholz and Gary Pihl during the Phoenix Rising show in Feb 2008, which raised money to benefit the Station Family Fund. The band also recorded that song in studio with Tom Scholz doing some guitar work on that song which was released as a single, and then on Murder By Pride.

Official website: www.stryper.com