PaulMcCartney.com recently asked the august subject of their site about writing the immortal song, Yesterday, which has been covered by other artists on over 2,500 recorded versions.

"The release of (the album) Pure McCartney got the office thinking how incredible it is that Paul was younger than some of us when he wrote so many of these classic songs, " enthuses the anoynmous contributor to the home page of the official site. 

Thus was framed a question which was duly directed at the now 74-year old musician: “Do you ever find your relationship to your own songs altering from what you originally had in mind when you wrote them?” 

“Yes, that happens all the time, " replies Macca.  "When I wrote Yesterday, I was in my 20s. So my 'yesterdays' covered quite a small period of time.

"Now the significance of the song seems even more striking because of the time that has passed since writing it, and the events that have happened in my life.

"I must admit, I really like this aspect of songwriting and playing.” 

"It fell out of bed," Paul McCartney once declared concerning Yesterday's beginnings. "I had a piano by my bedside, and I must have dreamed it, because I tumbled out of bed and put my hands on the piano keys and I had a tune in my head. It was just all there, a complete thing. I couldn't believe it. It came too easy."

McCartney famously used the words Scrambled eggs/Oh, my baby, how I love your legs to keep the melody in his head while the work was in progress, as it were. He completed the lyrics on a holiday with his then girlfriend the actress Jane Asher. He has since deemed Yesterday  "the most complete song I have ever written."

Yesterday is reputedly the most popular song in the Beatles' catalogue,  and has been recorded in over 2,500 cover versions. Frank Sinatra, Ray Charles, Elvis Presley and even Daffy Duck have done versions. 

The late John Lennon was not involved in its composition and once quipped: "I go to restaurants and the groups always play Yesterday. I even signed a guy's violin in Spain after he played us Yesterday. He couldn't understand that I didn't write the song. But I guess he couldn't have gone from table to table playing I Am the Walrus."

Yesterday was recorded on June 14 and 17, 1965 and released on September 13, 1965. MCCartney originally baulked at producer George Martin's idea of the string quartet accompaniment, but later agreed to the proposal.