Doctors strove to save the internationally known pacifist from what would be his violent demise, but he was pronounced dead within 15 minutes as "All My Loving" hummed on Roosevelt Hospital's speakers in the background.
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Lennon, having died at age 40, has now been dead for almost as long as he was alive.
Known first and foremost for his membership in the world famous band, The Beatles, alongside George Harrison, Paul McCartney and Ringo Starr, Lennon also left behind an impressive solo career with powerful songs like 'Imagine' and 'God'.
Not only did Lennon wow the entire world with the beauty of his music, he also became the voice of a generation seeking peace, which made his murder that much more heartbreaking.
"It was just so horrific that you couldn't take it in -- I couldn't take it in."
Paul McCartney, Rolling Stone interview
Take a look at John Lennon through the years (story continues below):
John Lennon's life
35 years ago today, John Lennon was killed
John Lennon performs on stage with his first band the 'Quarry Men' at a church function in Woolton, Merseyside, Great Britain, July 6, 1957. (AP Photo/Str) --- John Lennon spiel Guitarre bei einem Auftritt mit seiner ersten Band, den Quarry Men, auf einem Kirchenfest in Woolton, Merseyside; Grossbitannien am 6. Juli 1957. (AP Photo/Str)
Labour Party leader Harold Wilson is pictured with The Beatles (from left) Ringo Starr, John Lennon, George Harrison and Paul McCartney during the Variety Club of Great Britain's "Show Business Personality" presentation ceremony at the Dorchester Hotel in London, March 19, 1963. (AP Photo)
The Beatles, from left, Paul McCartney, Ringo Starr, John Lennon and George Harrison, are shown in a studio rehearsing in a studio, in London, England, Oct. 1, 1963. (AP Photo)
Paul McCartney, left, and John Lennon, two members of the Beatles pop group during a concert in London, on Nov. 11, 1963. (AP Photo/N)
John Lennon from the Beatles salutes to airport staff after arriving in Paris, France for a series of concerts at L'Olympia on Jan. 14, 1964. (AP Photo/Spartaco Bodini)
John Lennon of the Beatles emerges from the surf at Miami, Florida in February 1964. In background, left, is Ringo Starr with an unidentified woman. Others are unidentified. (AP Photo)
English singing group faces the Press at Delmonicoâs Hotel, in New York City, on Aug. 29, 1964. From left, John Lennon, Ringo Starr, Paul McCartney and George Harrison. (AP Photo)
Beatle John Lennon is shown in this 1965 photo at an unknown location. (AP Photo)
**FILE** This Oct. 26, 1965 file photo shows John Lennon, left, and Paul McCartney as they smile during a ceremony at Buckingham Palace in London. The British Broadcasting Corp. will air a long lost Beatles interview featuring John Lennon and Paul McCartney talking about the day they met and their songwriting partnership. The precious film sat forgotten for 44 years in a garage in south London until film fan Richard Jeffs realized a piece of pop history was contained inside. (AP Photo, FILE)
** FILE ** John Lennon is seen at a news conference in May 13, 1968 at the Americana Hotel in New York. John Lennon's killer was denied parole for a fourth time Tuesday, Oct. 10, 2006, because of the "bizarre nature" of his crime. (AP Photo/John Lindsay)
Members of the British pop group The Beatles, John Lennon, left,and Paul McCartney, announce that Beatles Ltd., is being reorganized for bigger things as Apple Corps Ltd., in New York, NY, May 15, 1968. The new company, owned equally by all four Beatles, will make films, produce records and own clothing stores in London. (AP Photo)
John Lennon of The Beatles is shown circa 1969 at an unknown location. (AP Photo)
** ARCHIV ** John Lennon und sein Frau Yoko Ono, aufgenommen am 23. Januar 1970 in ihrem Landhaus in Juetland, Daenemark. Die Erloese aus dem John-Lennon-Tributalbum "Make Some Noise - The Campaign to Save Darfur" gehen an Amnesty International. Lennon-Witwe Yoko Ono leitet auch alle Urheber- und Lizenzgebuehren an den guten Zweck weiter. (AP Photo) ** NUR S/W ** --- Beatle John Lennon and his wife, Yoko Ono, pose in short hair at their farmhouse retreat in North Jutland, Denmark, Jan. 23, 1970. (AP Photo)
John Lennon and his wife Yoko Ono are seen at the Cannes Film Festival, May 18, 1971. Lennon carries Ono's art book "Grapefruit" in his jacket. (AP Photo/Michel Lipchitz)
Adjusting sun-glasses under a large flat cap at Heathrow Airport, London on July 14, 1971, is Beatle John Lennon. He had just arrived from New York with his wife Yoko whose book "Grapefruit" is due to be published here Thursday. (AP Photo)
FILE - In this March 16, 1972 file photo, John Lennon leaves a deportation hearing at the offices of the Department of Immigration and Naturalization in New York. Lennonâs 75th birthday will be celebrated next month in New York City at a concert featuring Willie Nelson, the Roots, Steven Tyler and Sheryl Crow. Event producer Blackbird Presents announced Friday that the show will tape at The Theater at Madison Square Garden on Dec. 5, 2015. It will air on AMC on Dec. 19. (AP Photo/Tony Camerano, File)
John Lennon speaks as he arrived for a hearing on his case at U.S. Immigration and Naturalization Service offices in the lower Manhattan section of New York, May 12, 1972. (AP Photo/Ron Frehm)
Former Beatle John Lennon performs during a charity concert to benefit mentally challenged children at Madison Square Garden, Aug. 30, 1972, New York. (AP Photo/Dave Pickoff)
Former Beatle John Lennon, center, poses in front of the marquee at New York's Beacon Theater on Thursday, Oct. 17, 1974 where the "Sgt. Pepper's Lonely Hearts Club Band on the Road" will open soon. Lennon has his arm around Bruce Scott, who will perform in the musical. (AP Photo)
Yoko Ono gestures in evening on Tuesday, Jan. 18, 1977 as she and husband John Lennon, the former Beatle, arrive at New York's Minskoff Theater. They were attending the premiere performance of their Merce Cunningham Dance Company. (AP Photo)
John Lennon and his wife, Yoko Ono, arrive at The Hit Factory, a recording studio in New York City on Aug. 22, 1980. (AP Photo/Steve Sands)
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Lennon was appreciated in his time, having helped shape the peaceful attitude of 60s and 70s youths, but also continues to be recognized for the immensely imaginative and inspirational body of work that he produced -- less than 10 years ago, Lennon won an Online Film & Television Association award for the music featured in the 2007 film 'Across the Universe'.
Just a few months ago in October, a full tribute to 'the walrus' was held where several celebrities paid their respects to the lyrical guru: