Best song in music history?

Fair warning: I am basically indifferent to most music and a terrible person to ask this question

So it probably depends on what your criteria are for “best” and also what your definition of “song” is.  Like, if one of the components of bestness is “standing the test of time,” as it were, then we should probably just eliminate everything from the last hundred-odd years right out of the gate, and the Iliad, Odyssey and Aeneid were all written originally to be performed with musical accompaniment, even though that’s not how they’re usually experienced today, so they’re probably in the running.  Beethoven’s Ode to Joy presumably has to be up there somewhere, and so does Wagner’s Ride of the Valkyries.  According to Rolling Stone magazine, it’s Bob Dylan’s Like A Rolling Stone, which strikes me as having a slight hint of favouritism about it.  Heck, by some measures the Lord’s Prayer is probably in the running; it has great spiritual meaning to an awful lot of people, and can be set to music.

On the other hand, like, it’s obviously this.