Other than being their first platinum-selling album, The Grand Illusion led Styx steadfastly into the domain of AOR rock. Built on the strengths of &Come Sail Away&'s ballad-to-rock metamorphosis, which gained them their second Top Ten hit, and on the high harmonies of newcomer　Tommy Shaw　throughout &Fooling Yourself,& The Grand Illusion introduced Styx to the gates of commercial stardom. The pulverized growl of &Miss America& reveals the group's guitar-savvy approach to six-string rock, while　De Young　pretentiously struts his singing prowess throughout the title track.　Shaw　's induction into the band has clearly settled, and his guitar work, along with　James Young's, is full and extremely sharp where it matters most. Even the songwriting is more effluent than　Crystal Ball, which was released one year earlier, shedding their mystical song motifs for a more audience-pleasing lyric and chord counterpoise. Reaching number six on the album charts, The Grand Illusion was the first to display the gelled accomplishments of both Tommy Shaw　and　Dennis De Young　as a tandem.