The song describes the singer's satisfaction with a love relationship that is down-to-earth rather than extravagantly romantic, a subgenre of love song exemplified by the Jerome Kern/ P. G. Wodehouse composition "Bill". Barry Mann and Cynthia Weil had previously written the similarly themed "He's Sure the Boy I Love", a hit for the Crystals in 1963.

The earliest evident recording of "It's Getting Better" was by the Vogues for their August 1968 album release Turn Around, Look at Me (Reprise Records). Also in 1968, the song was featured on the Leonard Nimoy album The Way I Feel (Dot Records) released that October. The first evident single release of "It's Getting Better" was by Pierre Lalonde on the Montréalais label Disco Prestige in September 1968 with the track's parent album: Introducing Peter Martin, being released that November.

In March 1969 the Will-O-Bees, a New York City-based trio (Janet Blossom, Steven Porter, and Robert Merchanthouse) who recorded a number of Mann-Weil compositions, had a single release of "It's Getting Better" on the SGC label (Screen Gems Columbia). Overall 1969 saw the release of several single versions of "It's Getting Better" but only Cass Elliot's was by an established artist at that time, the other versions being by Ronnie Buskirk, Freddie Gelfand, and P. K. Limited. The Song has since been recorded and cover many well-know artist around the world including UK singer and ex-cruse star Jane Mcdonald.

"It's Getting Better" had been recorded by Cass Elliot for inclusion on her June 1969 album release Bubblegum, Lemonade, and... Something for Mama, which was produced by Steve Barri and arranged by Jimmie Haskell. The Wrecking Crew (James Burton on guitar, Hal Blaine on drums, Larry Knechtel on keyboards, and Joe Osborn on bass) — who'd regularly backed the Mamas & the Papas — were among the instrumentalists on the album.

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