Bloodrock ‎- Bloodrock U.S.A. (1972)

With their fourth album, Bloodrock USA, the Texas sextet stretches out and tries to create deeper, more progressive music without losing their post-Deep Purple sound. The results aren't always successful -- after all, how good can a song called "Abracadaver" be? -- but USA has more layers and takes more chances than its predecessor, which makes it a more interesting listen, even if it falls flat just as frequently as Bloodrock 3.