Petra

Petra is a Christian rock band that was formed in 1972 by Bob Hartman and Bill Glover in Fort Wayne, Indiana. The band has released a total of 21 albums, and their most successful albums are Beat the System (1984), Not of This World (1990), and Unseen Power (1991).

Some of Petra's standout songs include "I Love the Lord", "He Came, He Saw, He Conquered", and "This Means War!".

An interesting fact about Petra is that the band was one of the first Christian rock bands to achieve mainstream success. They have won four Grammy Awards and have been inducted into the Gospel Music Hall of Fame.