Days of Future Passed, The Moody Blues' second official album (released in 1967), was their first of what would be a succession of concept albums.
The seven tracks spawned two hit singles: Tuesday Afternoon (which on the album was combined with "Evening Time To Get Away" into a single track titled "The Afternoon: Forever Afternoon (Tuesday?)") and Nights in White Satin which hit #2 five years after the LP's original release