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.

The British group the Parlour Band sounded slightly like a much more mainstream, less art-rock-inclined Yes on their sole LP, 1972's little-known Is a Friend. Several members later played in A Band Called O, also sometimes referred to as O Band. Parlour Band's only LP is progressive rock-tinged mainstream early-'70s British album-oriented rock, competent but no more than that. Both keyboard and guitar parts take a strong role, and there's a bit of the multiple tempo changes and classical-tinged organ burble of bands like Yes in songs like "Forgotten Dreams." Some other songs steer well clear of art rock, though, "Pretty Haired Girl" coming across like prototypical early-'70s mellow California harmony rock.

Although released in 1971, the debut self-titled album by Spirit of John Morgan was actually recorded two years earlier, before the spirit of the '60s dissipated into the excesses of the '70s. But even back in 1969, the British quartet were already fish out of water, gasping for R&B in a Technicolor age of psychedelia. So they created their own, an entire album's worth of strong, shadowed, R&B numbers underlit by magnificent musicianship and powerful rhythms. The set opener, a menacing cover of Graham Bond's "I Want You," is a case in point, stalker-like in its intensity, with John Morgan's organ conjuring up a phantom of the opera from which there is no escape.

This album is Don Airey's debut solo album, released in 1989 and paying tribute to the dramatic 1986 K2 expedition that took the lives of 13 extraordinarily experienced climbers. Featuring beautifully orchestrated keyboard, guitar and drum parts all of which are played by friends from bands from Airey's past: Gary Moore, Cozy Powell and Colin Blunstone on vocals complete this Prog-Rock anthem of an album. 'K2 - Tales of Triumph and Tragedy' is a story told by music; intriguing and breathtaking.

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.

A concept album loosely based on man's fascination and allure for war throughout the ages, Daughter of Time contains all the elements required to create a pure progressive rock album. Joining David Greenslade and Chris Farlowe is Louis Cennamo from Renaissance, who plucks away at the bass guitar with a heavy hand. A multitude of instruments combine to create a brilliant melange of music on every one of the eight songs. Vibrant spurts of trombone, trumpet, and flute are driven to the height of each song, which gives way to some implements of jazz fusion.

Colosseum II was a British band formed in 1975 by the former Colosseum drummer and leader, Jon Hiseman, following the 1974 demise of his band Tempest. Hiseman announced his plan to form the band eventually named Colosseum II in November 1974, but only Gary Moore was named as a member. Rehearsals were due to begin on January 1, 1975, but a permanent unit was not finalised until May 1975. Among musicians who almost made the group were Graham Bell, Duncan Mackay and Mark Clarke. The final line-up was completed by Don Airey, Neil Murray and Mike Starrs.