Petra, whose name means “rock
” in Greek, was founded by
Bob Hartman
in 1972 while he was attending the Christian Training Center in Ft. Wayne, Indiana. Hartman recruited
Greg Hough
(guitar and vocals),
John DeGroff
(bass guitar), and
Bill Glover
(drums) to form the group. There was early opposition to using the rock ‘n
’ roll genre for Christian music, but the trail had already been blazed by artists such as
Love Song
and Larry Norman.
In 1973 the...