In 1939, a polka craze swept America thanks to "Beer Barrel Polka (Roll Out The Barrel)."

The 2001 Dirty Vegas hit "Days Go By" was written by their lead singer when he was longing for his ex-girlfriend. The sad song gave him a happy ending though: They got back together after it was released and eventually got married.

Ariana Grande's hit "Problem" started off as a track written by One Direction songwriter Savan Kotecha. He gave it the working title of "The Whisper Song," after a 2005 Ying Yang Twins hit.

A one-ton bell was custom made for AC/DC's "Hell's Bells." The recording was slowed to half speed to make it sound like a more ominous two-ton bell.

Enrique Iglesias' single "Bailando" was the first Spanish-language song to reach one billion views on YouTube.

James Brown's "Get Up (I Feel Like Being a) Sex Machine" was the first Hot 100 hit with the word "sex" in the title.
The writer of "Rainy Night in Georgia" and "Polk Salad Annie" explains how he cooks up his Louisiana swamp rock.
Brian has unearthed outtakes by Fleetwood Mac, Aretha Franklin, Elvis Costello and hundreds of other artists for reissues. Here's how he does it.
Go beyond The Beatles to see what you know about the British Invasion.
Phone booths are nearly extinct, but they provided storylines for some of the most profound songs of the pre-cell phone era.
10 Questions for the author of Precious Metal: Decibel Presents the Stories Behind 25 Extreme Metal Masterpieces
Do you know who wrote Patti Smith's biggest hit? How about the Grease theme song? See if you can match the song to the writer.