When "Last Friday Night (T.G.I.F.)" climbed to #1 on the Hot 100, Katy Perry became the first woman to send five songs from one album to the top of the charts. The four previous chart-toppers from her Teenage Dream set were "California Gurls," "Teenage Dream," "Firework" and "E.T."
Sia Furler originally sent "Pretty Hurts" to Katy Perry, but she didn't see the email, so Beyonce ended up recording it instead.
"Celebration" by Kool & the Gang has a deeper meaning - it was inspired by a verse in the Quran where angels celebrate as God creates man.
In The Band song "The Weight," Nazareth ("Went down to Nazareth") refers to a town in Pennsylvania where the Martin Guitar company was located.
"The Long and Winding Road" was the last of The Beatles' 20 #1 hits in America. Written by Paul McCartney, he said it's a sad song about "the door you never quite reach."
The riff for The Sex Pistols' "Pretty Vacant" was pinched from a very unpunk song, the ABBA ballad "S.O.S."
In 1986, a Stephen King novella was made into a movie, with a classic song serving as title, soundtrack and tone.
Ozzy biting a dove? Alice Cooper causing mayhem with a chicken? Creed so bad they were sued? See if you can spot the real concert mishaps.
When a song describes a wedding, it's rarely something to celebrate - with one big exception.
In this quiz, spot the artist who put Romeo into a song lyric.
Oliver Leiber talks about writing and producing hits for Paula Abdul, and explains his complicated relationship with his father, the songwriter Jerry Leiber.
Charlotte was established in the LA punk scene when a freaky girl named Belinda approached her wearing a garbage bag.