styx did score three triple-platinum albums—"the grand illusion" (1977), "pieces of eight" (1978) and "paradise theatre" (1981)—and one double-platinum album—"cornerstone" (1979)—on the same date, november 14, 1984. complete and detailed historical sales figures for record albums are not readily available to the public, but the certifications, which can be found at the riaa site, show that the feat the band actually achieved was being the first group to be awarded four consecutive multi-platinum albums with three of those ranking better than double platinum. styx achieved another double-platinum album—"greatest hits (volume i)"—on august 23, 2005.