Evolution is the name of Journey's fifth studio album. It was released in April 1979 on Columbia Records. The album was their highest charting album to date, selling three million copies in the US. They retained Roy Thomas Baker as producer but drummer Aynsley Dunbar was replaced with Steve Smith, formerly with Ronnie Montrose's band.
An album / record cover could have the theme of metamorphosis, showing the bands evolutionary journey in some way - be it from birth or how they've changed during the writing and recording of the album / track.