Let's be honest, the Happy Birthday song is awful and mundane. No one has fun singing it, it acts as more of a chore than anything else. Plus, people tend to sing is way too slow, making it even worse.
Let's replace it with a much better song that everyone enjoys, the theme song from the 1980s television show "The Greatest American Hero." Everyone will sing, laugh and have a great time, and we can get rid of that god-awful song.
Look at what's happened to me / I can't believe it myself / Suddenly I'm up on top of the world / It should've been somebody else
Believe it or not / I'm walking on air / I never thought I could feel so free / Flying away on a wing and a prayer / Who could it be? / Believe it or not it's just me