'A Question Of Balance' included the big hit 'Question,' as 1970 saw the Moodies go from strength to strength.
In the summer of 1971, the band topped the British charts with an album that contained no chart singles at all.
The Moodies hit their stride with a memorable fourth album in the final year of the 1960s.
The group's 1972 preview of their upcoming 'Seventh Sojourn' was one of their finest hours.
The group’s destiny turned in a new direction with their January 1968 UK chart entry.
'Seventh Sojourn' was a record full of classic Moodies songs, and it was America’s favourite album for five weeks.
It was no instant success, but gradually, the group's new marriage of pop and orchestral ingredients began to turn heads.
The new edition of the band's classic third album will feature alternate mixes and unreleased material.
Moody Blues co-founder Ray Thomas died on 4 January 2018 at 76. He revealed in 2014 that he had been diagnosed the year before with prostate cancer.