 Both Beatles producer George Martin (I) (qv) and independent  producer Glyn Johns (I) (qv) prepared mixes of the soundtrack  album, neither of which satisfied everyone. Martin effectively quit  working with the band, when criticisms started turning personal, but  returned to make "Abbey Road" after the Beatles promised to work  with him "like in the old days", with Martin calling the shots in  the studio. A second remix by Johns was also rejected, and with  Martin unwilling to work any further on "Let It Be",  Phil Spector (qv) was hired to complete the soundtrack.