"This album marked the formal debut of the psychedelic-era Moody Blues; though they'd made a pair of singles featuring new (as of 1966) members Justin Hayward and John Lodge, Days of Future Passed was a lot bolder and more ambitious. What surprises first-time listeners — and delighted them at the time — is the degree to which the group shares the spotlight with the London Festival Orchestra without compromising their sound or getting lost in the lush mix of sounds. That's mostly because they came to this album with the strongest, most cohesive body of songs in their history, having spent the previous year working up a new stage act and a new body of material (and working the bugs out of it on-stage), the best of which ended up here".