(via Quora) Answered by George Paolini
It all started with a cassette version of the song recorded by John Lennon in his apartment in New York in 1977 …
To put a bit of context behind this time in his life, John was a homebody, taking care of Sean and baking bread. He was getting pretty good at the baking and apparently even thought about opening a bakery. Meanwhile, Yoko was investing John’s money in things like cattle ranches. Also, during this time, John and Paul had reconciled and had even considered, as a lark, taking up Lorne Michael’s farcical offer to pay the Beatles $1,000 each to reunite on Saturday Night Live.
So, given this period in his life, it is amazing he was still writing…
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https://www.quora.com/How-was-Free-as-a-Bird-by-The-Beatles-recorded
Every Moment Has A Song 