East of Eden's debut LP is one of the hardest-rocking albums to come out of the progressive rock movement, and maybe the best non-Rolling Stones albums issued by English Decca label during the late 1960s. It's also one of the most daring debut albums of its period, less tightly focused than, say, King Crimson's Court of the Crimson King, but otherwise equally bold and maybe more challenging. The whole record is eerie - coming from a pop culture where most psychedelic rock tended toward the light and airy - East of Eden use high-impact bass, drum, and guitar parts mixed with the distinctly Oriental and Central/Eastern European classical influences…