Kilroy Was Here is the eleventh studio album by the rock band Styx, released on February 22, 1983. The album is named after a famous World War II graffito, 'Kilroy was here'. It was the final album of original material to be released by the "classic" lineup of Dennis DeYoung, Tommy Shaw, James "J.Y." Young, John Panozzo, and Chuck Panozzo. The album is certified platinum. As of 2018, it is the last studio album by the band to be certified platinum.

Presenting radio with one of the best rock ballads ever, Cornerstone gave Chicago's Styx their big break with the number one single "Babe," which held that spot for two weeks in October of 1979. "Babe" is a smooth, keyboard-pampered love song that finally credited Dennis De Young's textured vocals. While this single helped the album climb all the way to the number two spot on the charts, the rest of the tracks from Cornerstone weren't nearly half as strong. "Why Me" made it to number 26, and both "Lights" and "Boat on the River" implement silky harmonies and welcoming choruses, yet failed to get off the ground.

Pieces of Eight is the eighth studio album by Styx, released on September 1, 1978. Like the band's previous album, The Grand Illusion (1977), it managed to achieve triple platinum certification, thanks to the hit singles "Blue Collar Man (Long Nights)" and "Renegade". The band members produced and recorded the album (like their previous three efforts) at Paragon Studios in Chicago with recording engineer Barry Mraz and mixing engineer Rob Kingsland. "I'm O.K." was recorded at Paragon and St. James Cathedral. This would be the last album to be produced at Paragon Studios.

Replacing the band's volume in A&M's Classics series, Greatest Hits collects all Styx's major chart and radio hits, from "Lady" to "Show Me the Way." Although they were a definitive album-oriented rock band, creating records that were meant to be listened to as a whole, their finest moments were always their singles, making Greatest Hits the only Styx disc many fans will need to own.

For Styx II (1973), the Chicago-based quintet continue much in the same vein as their eponymous debut. The primary difference was the inclusion of the Dennis DeYoung power ballad "Lady" – which catapulted the combo into the Top Ten pop singles survey at an admirable number six. The collection was their first to rely entirely upon band-penned originals, kicking off with the rousing "You Need Love." The performance sounds similar to Queen's earliest sides, especially James Young's commanding vocals which provide a distinct and dramatic quality. The aforementioned "Lady" is equally dynamic, contrasting the delicate and ethereal introduction with the comparatively emphatic conclusion.

The 1972 self-titled album from Chicago-based quintet Styx could be considered an ambitious outing for any band's debut. Clearly influenced by the primarily U.K-centered progressive rock scene, Dennis DeYoung (keyboard/vocals) hooked up with twin siblings Chuck Panozzo (bass/vocals) and John Panozzo (drums/percussion/vocals) in a combo named the Tradewinds during the late '60s. The first lineup of Styx began to emerge once John Curulewski (guitar/synthesizer/vocals) and James "J.Y." Young (guitar/vocals) joined up, initially surfacing under the moniker TW4.

Assembled with the cooperation of the band, Styx's entry in Universal's 20th Century Masters – The Millennium Collection series of discount-priced best-of's, surveys the group's tenure at A&M Records, where they scored most of their popular success. Of course, the early hit "Lady," recorded for RCA-distributed Wooden Nickel Records (and thus in the vaults of rival major label BMG), is not included. Neither are the Top Ten hit "Don't Let It End," or the Top 20 hit "Renegade" (mistakenly called a Top Ten hit in the liner notes). But the rest of Styx's big A&M hits – "Too Much Time on My Hands," "Come Sail Away," "Mr. Roboto," "The Best of Times," "Babe," "Show Me the Way" – are on the disc, along with several Top 40 entries and the popular album track "Boat on the River," from 1979's Cornerstone LP.

Styx was the perfect blend of soft ballads and hard rock tunes. "The Grand Illusion" would catapult them to multi-platinum superstar status. The album produced two huge hits with "Fooling Yourself" and "Come Sail Away" the centerpiece of the entire Styx catalog. Reaching number six on the Billboard charts, this crisply produced seventh studio album contains all of the elements that made Styx what they were - the unquestioned mastery of their musical instruments, their remarkable vocals and their ethereal lyrics and arrangements. This excellent combination of pop and art-rock was the first to display the gelled accomplishments of both Dennis De Young and Tommy Shaw as a tandem and Shaw's guitar work, along with James Young's, is full and extremely sharp.