The Moody Blues with The London Festival Orchestra conducted by Peter Knight.

Deram Records (a London/Decca imprint) chose the Moody Blues to make an LP in order to promote Deramic Stereo and the group was to be forgiven its debt to the label to make a rock and roll version of Dvorak's New World Symphony. The Moody Blues agreed, but insisted that they be given artistic freedom and left without supervision; they then convinced Peter Knight, who'd been assigned to arrange and conduct the orchestral interludes, to collaborate on a recording of their stage show instead. Deram executives were initially sceptical about the hybrid style of the resulting concept album, Days of Future Passed (1967), however it would become one of the most successful commercial releases of all time. The album plus two singles, "Nights in White Satin" and "Tuesday Afternoon" became massively popular,