It's hard to believe it's been almost 40 years since we lost John Lennon on Dec. 8, 1980. He would've been 80 years old on Friday, Oct. 9.

I often wonder how his career would've progressed into the '80s, '90s and beyond. Would he have started touring again? Would there have been a Beatles reunion? At the time of his death, he was enjoying a creative resurgence and was writing and recording again. We'll never know, but we will always have the tremendous library of music he left behind.

Here are the Top 10 John Lennon songs (post-Beatles songs) as determined by BIG 100 listeners.

10) Whatever Gets You Thru The Night

9) (Just Like) Starting Over

8) Mother

7) Working Class Hero

6) Jealous Guy

5) Happy Xmas (War Is Over)

4) #9 Dream

3) Instand Karma! (We All Shine On)

2) Give Peace A Chance

1) Imagine

photo credit - getty images