Oasis: Wonderwall

Oasis was a British pop band active from 1991-2009. "Wonderwall" was written by the band's guitarist and chief songwriter, Noel Gallagher (possibly as a love song for his at the time girlfriend). This song receives a constant following, if nothing else, from the fact of it being written as a possible love song. If anyone knows (literally anything, but mostly nothing) about a guitar, they know this song and will readily play it for you at a party or if you're a cute gal.

That aside, it's a wonderful song which a huge audience can appreciate. Noel wrote his heart out, and it comes across as such.