Back in Brazil

Rolling Stone called the song one of the weirdest tracks on the album, while noting that McCartney played over 9 instruments in the song.[2] The song starts out with a lounge beat, but also included guitar, Wurlitzer piano, conga drums, and a triangle. The chorus of the song just features McCartney yelling the word "Ichiban!," which is strange because it is a Japanese word and not Portuguese. When McCartney was asked why he said "Ichiban" in the song he dismissed the question and promised that he'll answer the question at a later date, in the You Gave Me The Answer feature of his website.[2] McCartney's producer Greg Kurstin stated that "It was one of the trickier songs to get the feel of, to get the drum groove and all that stuff," and that McCartney "labored for hours working on the song."[2] The song reached number 8 on the Brazilian iTunes chart.[3]

A music video for the song was released on 16 September 2018.[4] The video follows a story of a beautiful Brazilian woman who invites her boyfriend to a Paul McCartney concert. While stuck at work, the boyfriend cannot go and they nearly break up. At the concert McCartney invites her on stage to dance, and because of that moment she forgives her boyfriend when he comes back to apologize.[5] The concert sequence was recorded during the McCartney's performance in Salvador, 20 October 2017 for the One on One Tour.[6]

• Paul McCartney – lead vocals, bass guitar, congas, acoustic guitar, electric guitar, Wurlitzer, harmonium, bird recording, triangle
• Greg Kurstin – wurlitzer, bass FX
• Abe Laboriel Jr – drums, backing vocals
• Pedro Eustache – bamboo flute, duduk
• String quartet (Abbey Road)