Imagine is a song by John Lennon that envisions a world of peace and unity, free from barriers and conflict. Released in 1971, it has become an anthem for peace movements and is celebrated for its simple yet profound lyrics that encourage listeners to dream of a better world. The song invites people to imagine a life without possessions, countries, or religions, promoting the idea of global harmony. Its timeless message resonates with audiences around the world, making it one of the most iconic songs in music history.