The "Those Years CD Set" likely features a collection of music in CD format that spans across various editions such as First Edition, Deluxe Edition, Collector's Edition, Live, Anthology, Anniversary Edition, Greatest Hits, and Best Of. This set may offer a comprehensive look at the artist's discography, including their most popular and iconic hits from different eras. Perfect for music enthusiasts looking to delve into the artsist's work in a convenient CD format.