Return to the Centre of the Earth is a studio album by the English keyboardist Rick Wakeman, released on 15 March 1999 on EMI Classics. The album is a sequel to his 1974 concept album Journey to the Centre of the Earth, itself based on the same-titled science fiction novel by Jules Verne. Wakeman wrote a new story of three unnamed travellers who attempt to follow the original journey two hundred years later, including the music which features guest performances from Ozzy Osbourne, Bonnie Tyler, Tony Mitchell, Trevor Rabin, Justin Hayward, and Katrina Leskanich. The story is narrated by Patrick Stewart. Upon release, the album reached number 34 on the UK Albums Chart.

This is the album where Jeff Lynne finally found the sound he'd wanted since co-founding Electric Light Orchestra three years earlier. Up to this point, most of the group's music had been self-contained – Lynne, Richard Tandy, et al., providing whatever was needed, vocally or instrumentally, even if it meant overdubbing their work layer upon layer. Lynne saw the limitations of this process, however, and opted for the presence of an orchestra – it was only 30 pieces, but the result was a much richer musical palette than the group had ever had to work with, and their most ambitious and successful record up to that time. Indeed, Eldorado was strongly reminiscent in some ways of Sgt. Pepper's Lonely Hearts Club Band.

Flashback is the second box set compilation by Electric Light Orchestra (ELO), released in 2000. In 2000, Jeff Lynne found a new impetus to work on the music of his old band and returned to the recording studio to work on an ELO project for the first time in some 15 years just prior to the comeback album Zoom in 2001. This work resulted in a digitally remastered compilation released in late 2000. Unlike its predecessors, this project, Flashback, was personally approved and endorsed by Lynne. The set includes songs featured from all 11 studio albums up to that point, including an edit of "Great Balls of Fire" from their live album The Night the Light Went On in Long Beach, plus some new recordings amongst the band's extensive back catalog, most notably a reworking of Lynne's only UK number one hit "Xanadu". The album includes liner notes by David Wild with quotes on each song from Lynne and a booklet inside.

Secret Messages is the tenth studio album by Electric Light Orchestra (ELO), released in 1983 on Jet Records. It was the last ELO album with bass guitarist Kelly Groucutt, conductor Louis Clark and real stringed instruments, and the last ELO album to be released on the Jet label. It was also the final ELO studio album to become a worldwide top 40 hit upon release. Secret Messages, as its title suggests, is littered with hidden messages in the form of backmasking, some obvious and others less so. This was Jeff Lynne's second tongue-in-cheek response to allegations of hidden Satanic messages in earlier Electric Light Orchestra LPs by Christian fundamentalists, which led up to American congressional hearings in the early 1980s (a similar response had been made by Lynne on the Face the Music album, during the intro to the "Fire on High" track).

The French group Halloween was one of the first new progressive rock groups to emerge from the late 80's. Nothing is truly over and done with, as the phoenix rising from the ashes of time can always rise once again and soar into the mainstream. Call it rebirth (or its better-known French label 'la Renaissance') perhaps even artistic freedom after 24 years of immaculate silence, this veteran group reignites its muse for a return to the progressive community in 2025. Around the original core trio of vocalist/violinist Jean-Philippe Brun, Gilles Coppin on keyboards,(both class of 1988) and drum stool director Philippe di Faustino (in 1989) , as well as adding Geraldine LeCoq on the vocals (1994), Psy-KO showcases their ongoing legacy of intricate symphonic-prog but adding impregnable jazz-rock elements that eschew a mature sensibility in proposing challenging colorations to their discography.

British group the Enid were formed in 1974. The founder of the band was Robert John Godfrey (Barclay James Harvest). In forming the group he was joined by Stephen Stewart and Francis Lickerish. They released their first album in 1976. Coming at the heart of the punk rock era, the jazz/progressive rock-ish release (In the Region of the Summer Stars) certainly did not fit into that genre. Two years later the group followed that release with Aerie Faerie Nonsense. In 1979 they released Touch Me and Six Pieces came out the following year.

5CD package containing albums from Electric Light Orchestra and Jeff Lynne's solo career. Albums are packaged in cardboard replica vinyl sleeves and bundled in a card slipcase. Albums featured: Armchair Theatre, Zoom, Mr. Blue Sky The Very Best Of ELO, Longwave & Electric Light Orchestra Live.