Shakira calls her sons Milan and Sasha her "Waka Kids" because she met their father, Spanish soccer star Gerard Piqué, on the video shoot for "Waka Waka (This Time For Africa)," the official song of the 2010 FIFA World Cup in South Africa.

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.

"MMMbop" by Hanson was so ubiquitous in 1997 that when the band appeared on SNL, they took part in a skit where Helen Hunt and Will Ferrell seek retribution by trapping them in an elevator and playing the song until they crack. "Now, you will suffer like we did," Hunt tells them.

"Take Me Home Country Roads" is set in West Virginia, but John Denver had never been there when he recorded the song. The country roads represent a sense of belonging.

"Hips Don't Lie" is Shakira's in-studio mantra for her crew: If her hips are moving, the song is working. If not, best to try something else.

Bing Crosby debuted the song "White Christmas" in the 1942 movie Holiday Inn, where he plays a New Yorker stuck in Southern California for Christmas and missing the snow. The song became a Christmas classic and the basis for the 1954 movie White Christmas, also starring Crosby.
Many unusual folks appear in Grateful Dead songs. Can you identify them?
The stories behind the biggest hit songs about trucking.
His song "Into The Night" is one of the most-played of all time. For Benny, it took him to hell and back.
Was Janet secretly married at 18? Did she gain 60 pounds for a movie role that went to Mariah Carey? See what you know about Ms. Jackson.
The Def Leppard frontman talks about their "lamentable" hit he never thought of as a single, and why he's juiced by his Mott The Hoople cover band.
An interview with Frankie Valli, who talks about why his songs - both solo and with The Four Seasons - have endured, and reflects on his time as Rusty Millio on The Sopranos.