So imagine two friends grow up in separate parts of Canada and meet each other in the mid-1960s Toronto club scene where they are both aspiring musicians. The guy plays in a "rock" band, and the girl is more of a folk singer-songwriter artist. The guy hangs out at a teen club where his band plays, and in '68 when he turns 20 yrs old he is shattered to learn that he's now viewed as too old to attend the "teen hangout" with his friends and bandmates...
So he writes a song about his lost youth and the pain of adulthood and plays it for his friend. She writes a song in response to console him and try to show him that life doesn't end at 21, that it's the beginning of a new chapter. Eventually, both friends embark on their respective musical odysseys and a couple of years later they find themselves reunited in LA, and both actually end up hanging out in Laurel Canyon. Not only that, but the girl is the romantic interest of 2/3 of a musical trio he is about to become a part of, and they've just released a debut album that includes 3 or 4 songs specifically about her. It is 1969...
All of them go on to widespread acclaim, and a year or so later she is performing at the Royal Albert Hall in London, along with another Love interest who is an emerging Superstar in his own right. As they perform together she introduces the song she wrote back in Canada and tells the story of her friend who was disconsolate at the thought of turning 20. I wonder how many people who were in the audience that night and heard her talk about her friend realized who she was talking about? The intro is amazing from a historical perspective and the harmonies on this version are stunning...