By 1969, Kaye was exhausted and had become disillusioned from doing session work, saying that the music had "started to sound like cardboard". At the same time, many newer rock bands disapproved of using session players, preferring to play the instruments themselves. She decided to make a change so her career evolved from playing primarily pop music to performing mostly soundtrack work, as well as writing and teaching. She wrote "How To Play The Electric Bass", the first in a series of tutoring books and instructional video courses. Her soundtrack sessions from this time included playing on the themes to "M.A.S.H." and "Shaft". Kaye had already performed on a number of soundtracks and had worked closely with Lalo Schifrin, playing on the theme to "" and the soundtrack for "Bullitt". Following that she regularly collaborated with Quincy Jones, later saying that he "wrote some of the most beautiful themes I've ever heard in my life".