Blue Cheer’s cover of Eddie Cochran’s “ Summertime Blues ” is, rightly, viewed as the first true heavy metal song. It’s loud, it’s unhinged, and it’s heavy as fuck. But Blue Cheer, while highly influential on the shape of metal music, was always more of a psych rock band. A massive, deafening and super heavy psych rock band. Vincebus Eruptum , the Bay Area band’s 1968 debut, is a thunderous squall of distorted riffs, blown-out amplifiers and ear-splitting solos. It’s rooted in the blues, but like Hendrix or Cream before them, Blue Cheer twist and mangle blues-based riffs and progressions into acid-fried destructive delights. In the 1960s, bands didn’t come much heavier than Blue Cheer. And today, still, most don’t come close.