A longstanding, oft-repeated claim in the music industry and the mainstream press is that Styx were the first band to release four consecutive Triple-Platinum albums, signifying at least 3 million units sold.During the period when these albums charted, the RIAA's only certifications were for Gold (500,000 units sold) and Platinum (1 million). Multi-Platinum awards were introduced in late October 1984. Following this development, record companies submitted their most popular artists' sales records to accountants in order to achieve the new thresholds. Styx did score three Triple-Platinum albumsParadise Theater, Pieces of Eight and The Grand Illusionand one Double-Platinum albumCornerstoneon 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 albumGreatest Hits (Volume I)on August 23, 2005.