Tired of X-Factor winners getting the UK Christmas #1, British Facebook users staged a successful campaign to download "Killing In The Name" by Rage Against The Machine enough times to boost the song to the top in 2009, blocking the X-Factor single by Joe McElderry.
Bruce Springsteen's "Streets Of Philadelphia" won the Oscar for Best Original Song in 1994, beating out Neil Young's "Philadelphia," which was also written for the movie Philadelphia.
"Unchained Melody" first appeared in a 1955 movie called Unchained. The Righteous Brothers recorded it in 1965, and their version was resurrected in the 1990 movie Ghost.
Christine McVie wrote "Songbird" for Fleetwood Mac's Rumours album in just half a hour after she woke up in the middle of the night with the song in her head.
Florida Georgia Line's "Cruise" spent 24 weeks on top of the Country chart - the most ever until Sam Hunt's "Body Like a Back Road" was #1 for 34 weeks. The record was previously held by Eddy Arnold's "I'll Hold You in My Heart (1947-48), Hank Snow's "I'm Moving On" (1950-51) and Webb Pierce's "In the Jailhouse Now" (1955), which each led for 21 weeks.
What #1 hit is built on a sample of another #1 hit? "Hypnotize" by The Notorious B.I.G., which gets its groove from "Rise," a chart-topper for Herb Alpert in 1979.
Was "Pearl" Eddie Vedder's grandmother, and did she really make a hallucinogenic jam? Did Journey have a contest to name the group? And what does KISS stand for anyway?
When he joined Guns N' Roses in 1990, Matt helped them craft an orchestral sound; his mezzo fortes and pianissimos are all over "November Rain."
The Bush frontman on where he finds inspiration for lyrics, if his "machine head" is a guitar tuner, and the stories behind songs from the album The Kingdom.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.
The rock revolutionist on songwriting, quitting smoking, and what she thinks of Rush Limbaugh using her song.
The first of Billy's five #1 hits was the song that propelled Madonna to stardom. You'd think that would get you a backstage pass, wouldn't you?