After the Yardbirds broke down and were promotionally reconstituted by Jimmy Page as the "New Yardbirds," that is Led Zeppelin, vocalist Keith Relf formed a duo with ex-'Bird Jim McCarty. Shortly they expanded the concept into the folk-rock-classical band Renaissance, which also fell apart before becoming much more famous in a second incarnation with vocalist Annie Haslam. Relf would go on to release only one more project during his lifetime, with the "supergroup" Armageddon.
The album stiffed at the time, and these days the reason the other members were considered high-profile enough to make the group "super" has mostly faded from mainstream consciousness: Guitarist Martin Pugh & bassist Louis Cennamo were with UK blues-rock band Steamhammer, and drummer Bobby Caldwell with Captain Beyond. The music shows Relf & company extending the prog side of Renaissance into hard rock territory, with a lot of Pugh & Cennamo's blues-rock influence in the mix.
It's sort of like Savoy Brown crossed with Rush, which is either a compliment or an insult depending on which side of the fence one resides on. The cover is nice, though, showing the band sitting down for a smoke in the midst of some sort of post-apocalyptic nightmare -- and transformed into rock piles on the reverse! (A&M, 1975)