By Hartman's admission, his vocal style did not match well with the band's genre, and Petra brought in a number of guest vocalists for the second record, among them former e vocalist Greg X. Volz (that band's name being a lower-case abbreviation of "Emmanuel"). Volz took the lead vocals on two songs and backed up several others. Among Volz's songs was a cover of the Argent anthem "God Gave Rock and Roll to You", which Myrrh had hoped to release as a radio single to the secular market. The song was immediately controversial – and revolutionary. "It was the boldest statement anyone in Christian music had made until that time," said Ambassador Artist Agency president Wes Yoder. "This was a radical notion, especially in the minds of the leaders of conservative churches." Other guest singers featured in the album were Steve Camp, Karen Morrison, and Austin Roberts.