In early 1969, guitarist Leslie West of the Vagrants started a band called Leslie West Mountain (with "mountain" being a reference to his then-large size); other bandmembers were Norman Landsberg (keyboards, bass) and Ken Janick (drums). Felix Pappalardi expressed interest in producing the band's work.
The album is called Mountain and was released in July 1969, just five months after Goodbye; Felix Pappalardi produced the album and also performed bass guitar with Leslie West, Norman Landsberg, and drummer N. D. Smart, formerly with the highly regarded Boston garage band the Remains (who are featured on the Nuggets album). The album is often confused as being by the band Mountain; but officially, it is the first solo album by Leslie West.