1. Celtic Frost, Cold Lake

In 1984, Celtic Frost’s debut album Morbid Tales helped kickstart the still developing death/black metal movement. And while it’s only natural that bands experiment, by the time the band’s Cold Lake came out four years later, they’d gone from an extreme band to a band that sounded like Extreme. The band’s fourth album found them diving into the then-popular glam/hair metal scene. Tom G. Warrior hired an entirely new lineup for the album, and apparently allowed guitarist Oliver Amberg to do a lot of the writing. As evidenced in songs like “Cherry Orchards,” their new direction went together like Immortal and pastel colors – Amberg was fired after the album came out, Cold Lake is long out of print, and Celtic Frost were the textbook case of a heritage metal band with integrity putting out a shit album… until Illud Divinum Insanus came out.