Paul McCartney had taped a demo of "Tomorrow" before he and Linda began recording their album Ram in New York City in late 1970.
"Tomorrow" was sequenced as the penultimate track, ahead of "Dear Friend", McCartney's song of reconciliation towards his former Beatles bandmate John Lennon.
[10][11][12] Writing in Rolling Stone, John Mendelsohn said that "Tomorrow" was "archetypal post-Beatles McCartney: banal, self-celebrating lyrics full of many of the most tired rhymes in Western pop; glossy, if unfocussed production; pretty, eminently Muzakable melodies".
[14] Beatles biographer Nicholas Schaffner said that, although the song was among the "one or two half-decent tunes" on Wild Life, it was "suffocated by Linda's gloppy oohs and aahs unaccountably mixed as high as the lead vocal".
[17] He describes it as a composition that "evoked his Beatle triumphs, or at least McCartney's stronger cuts" and says that had it been released as a single, the song might have created more public interest in Wild Life.
[8] The track began circulating on bootleg compilations, paired with "Proud Mum", an instrumental that McCartney recorded as an intended advertising jingle for Mother's Pride bread.