Short answers, pulled from the story.
John Lennon recorded six demos of the song Real Love in 1979 and 1980 using a handheld tape recorder at his home piano. The track began as part of an unfinished stage play titled The Ballad of John and Yoko which Lennon and his wife Yoko Ono discussed with the press in June 1978.
Jeff Lynne served as co-producer alongside Paul McCartney George Harrison and Ringo Starr to create what would become the last new Beatles song released during Harrison's lifetime. The group focused their attention on four songs including Free as a Bird and Real Love eventually choosing to work on the latter after completing the former single.
The team spent approximately one week removing clicks and background noise before transferring the audio to a DAT master usable for further production. Engineer Geoff Emerick worked with assistant Jon Jacobs to synchronize new instrumentation with Lennon's vocals while maintaining the original recording quality.
The single debuted on British charts on the 16th of March 1996 selling 50,000 copies in its first week before falling out of the top forty after seven weeks. In the United States the track entered the charts on March 30 and peaked at number 11 with 500,000 copies sold over four months.
Apple Records released a new deluxe version of the album 1+ on the 6th of November 2015 featuring Giles Martin and Jeff Lynne remixed versions of Real Love. The 2015 remix reinstated deleted elements such as lead guitar phrases and drum fills while making harpsichord and harmonium more prominent in the mix.