Song of the Luminescent

What is the most beautiful song you've ever heard? A song that you can never get tired of listening to, a song that opens up a door to utopia, where your oppressed mind can attain peace and escape from reality as long as the song plays, a song that creates a temporary illusion and projects the world as a nice place, away from all hatred, away from the vice, away from the suffering, away from the world where the strong dominates the weak, a song that makes you sit back and reminisce the defining moments of your life. What is the most beautiful song you've ever heard?