According to the listeners of WTMD, the greatest song of all time is "Imagine" by John Lennon.
Really? I can't believe that this is the song that got the most votes. I disagree. I also disagree with alot of those in the top 50 (Mainly "Hotel California", which is on my list of songs I never want to hear ever again).
Bob Dylan has a bunch of songs in the top 50. So that's nice.
See the list for yourself here.