The Moody Blues went a step further and with the co-operation of orchestral arranger Peter Knight and producer Hugh Mendl, recorded an entire album of their own music in just five days with the London Festival Orchestra.
The sessions introduced the band to Tony Clarke who would go on to produce the Moodies biggest-selling albums.
Despite initial reluctance by the record company, the resulting collection of completed tracks entitled 'Days Of Future Passed', was released on the Decca subsidiary Deram label that was specialising in progressive music.
Days Of Future Passed - issued in November of 1967 - was a milestone in music, giving rise to the "concept album" and reached No. 27 in the UK and No. 3 in the USA charts thus gaining the band a foot-hold on the all-important American market.
Lets remember 1967 was the year of Sg Pepper