John Lennon was an inspirational man to say the least. He came into popularity at a pivotal point in pop culture, just in time for a new emergence of art and music that became characteristic of the boundary-testing 60s.
First, he, along with the Beatles, performed simple, feel good, rock and roll, but as time went on, the maturation and evolution of of his style and music took a turn towards the political.
Songs like "Revolution" challenged the belligerent attitude in the late 60s and early 70s, "I am the Walrus" poked fun at those who over analyzed their songs, and starting with the ubiquitous "All you need is love", Lennon's push for world peace became clear.
When the Beatles broke up, the world was shattered. The pop icons that dominated the air waves, television broadcasts, and record stores everywhere suddenly dropped from the Earth, leaving a sonic void that would be hard to fill. However, this was not the end of Lennon's career. His successful solo career was the final step in his progression from simple rocker to world peace proponent., and no song captures the essence of what John was than "Imagine"
Simple in its production, the timeless piece sings of an ideal future, a future where world peace is actually achieved; while some may say that he's a dreamer, I can tell you he's not the only one.