Goodbye was written by Paul McCartney but is credited to Lennon-McCartney. A demo version recorded by Paul McCartney in 1969 has never been released. The song was recorded by Mary Hopkin in 1969. The recording features Paul McCartney on bass, acoustic guitar and percussion. It was produced by Paul McCartney and released as a single on the Apple Records label in 1969. The B-side was Sparrow. The single reached number two on the UK Singles chart and number thirteen on the Billboard chart.