In more than three decades, the band experienced numerous lineup changes yet released 20 studio albums, as well as two Spanish-language and two live albums, selling nearly 10 million copies while being nominated for 13 Grammy Awards, winning four, and winning 10 Dove Awards. Its biggest hit, "The Coloring Song", reached the top position on three Christian radio charts simultaneously, and at its peak, the band's tours rivaled Amy Grant's in popularity among Christian audiences. Petra was the first rock band inducted into the Gospel Music Hall of Fame and the first Christian band whose memorabilia was included in the Hard Rock Cafe restaurant chain.