"Thinking About You" was the ninth track from Calvin Harris' 18 Months album to enter the UK singles Top 10. No other artist has obtained so many hits from one LP - Michael Jackson was the previous record holder with seven Top 10 tunes from both his Bad and Dangerous sets.
"Forever" by Chris Brown was written for a Wrigley's Doublemint Gum commercial. The full song contains the gum's tagline: "Double your pleasure, double your fun."
The bedrock of David Guetta's Nicki Minaj-featuring single "Hey Mama" is a sample of "Rosie," a 1940s prison recording from folk archivist Alan Lomax that songwriter Esther Dean first showed the French DJ on YouTube.
"We Belong Together" finds Mariah Carey listening to the radio and hearing songs that remind her of heartbreak. Two real songs get specific mentions: "If You Think You're Lonely Now" by Bobby Womack and "Two Occasions" by The Deele (Babyface's group).
"Paper Planes" was inspired by M.I.A.'s hassles trying to get a visa to enter America.
"I Got You Babe" made Sonny Bono the only person to perform on a #1 hit and also get elected to congress.
Before he was the champ, Ali released an album called I Am The Greatest!, but his musical influence is best heard in the songs he inspired.
Rick has a surprising dark side, a strong feminine side and, in a certain TV show, a naked backside. But he still hasn't found Jessie's Girl.
Nick made some of the biggest videos on MTV, including "The Final Countdown," "Heaven" and "Don't Know What You Got (Till It's Gone)."
Whether he's splitting ears or burning Nazis, Quentin Tarantino uses memorable music in his films. See if you can match the song to the scene.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
Ian talks about his 3 or 4 blatant attempts to write a pop song, and also the ones he most connected with, including "Locomotive Breath."