ðə tˈɛknɪkəl ɡɪtˈɑːɹ ɹˈɪfs bɪɡˈæn ˌɔn ðɪs ɹᵻlˈiːs, ɐ tɹˈeɪt ðæt ɪvˈɑːlvd ænd pɹəɡɹˈɛst ˈiːvən mˈoːɹ ˌɔn lˈeɪɾɚɹ ˈælbəmz.
The technical guitar riffs began on this release, a trait that evolved and progressed even more on later albums.