Population II, the now legendary, extremely rare album by guitarist/vocalist Holden and drummer/keyboardist Chris Lockheed is considered to be one of the earliest examples of doom metal. Though its original release was a very limited in number and distribution, like all great records, its impact over time has continued to grow. In 1969, Holden, fresh off his tenure with proto-metal pioneers Blue Cheer (appearing on one side of the New! Improved! Blue Cheer album and touring for the better part of a year in the group), aimed for more control over his band. Thus, Randy Holden - Population II was born, the duo naming itself after the astronomical term for a particular star cluster with heavy metals present.