Katy Perry's breakout hit "I Kissed A Girl" was surprising to those familiar with her past: her parents were pastors and she started off singing Christian music.
The riff for The Sex Pistols' "Pretty Vacant" was pinched from a very unpunk song, the ABBA ballad "S.O.S."
The French part in Lady Gaga's "Bad Romance" translates to: "I want your love and I want your revenge."
Elton John had a huge hit duetting with Kiki Dee on "Don't Go Breaking My Heart," but he's also performed it with RuPaul and Miss Piggy.
The line "satellite of love" in the Def Leppard song "Rocket" came from the title of a 1972 Lou Reed song.
Geffen Records made history on June 27, 1994 when Aerosmith's "Head First" became the first major label song made available for exclusive digital download. Download speeds at the time were so slow it took around 75 minutes to download the track.
Famous songs that lent their titles - and in some cases storylines - to movies.
When he was playing Ozzfest with Black Label Society, a kid told Zakk he was the best Ozzy guitarist - Zakk had to correct him.
Long before Eminem, Justin Bieber and Nicki Minaj created alternate personas, David Bowie, Bono, Joni Mitchell and even Hank Williams took on characters.
How a goofy detective movie, a disenchanted director and an unlikely songwriter led to one of the biggest hits in pop history.
The writer of "Rainy Night in Georgia" and "Polk Salad Annie" explains how he cooks up his Louisiana swamp rock.
How a country weeper and a blues number made "rolling stone" the most popular phrase in rock.
