Pink Floyd and The Incredible String Band.
The Incredible String Band.
While 1968 was the year the ISB released two or three LPs, depending how you count them, 1970 was the one when they released three albums, comprising 4 LPs. These were the only years they released more than one LP. The odd 1970 one is the music soundtrack of a film called “Be Glad For The Song Has No Ending”, and the LP has the same title. However, it was released on the Island label, whereas all the others were of course on Elektra. This is the front cover: