Enrique Iglesias' single "Bailando" was the first ever Spanish-language song to reach one billion views on YouTube.
Lindsay Lohan has some lyrics from Billy Joel's "I Go To Extremes" tattooed on her ribcage: "Clear as a crystal, sharp as a knife I feel like I'm in the prime of my life."
"Constant Craving" by k.d. lang deals with principles of Buddhism, including the cycles of birth and death.
The 1979 song "Life During Wartime" by Talking Heads deals with how technology could be exploited to take down the framework of society and enable government surveillance.
The first rap song to make the Hot 100 was "Rapper's Delight" by The Sugarhill Gang in 1979. At the time, many considered rap a fad that would soon pass.
Katy Perry's song "E.T." came from a beat originally intended for the rap group Three Six Mafia. When her producer accidentally pulled up the beat, Perry asked to use it.
Joe talks about the challenges of of making a Duke Ellington tribute album, and tells the stories behind some of his hits.
Shows like Dawson's Creek, Grey's Anatomy and Buffy the Vampire Slayer changed the way songs were heard on TV, and produced some hits in the process.
How a goofy detective movie, a disenchanted director and an unlikely songwriter led to one of the biggest hits in pop history.
Psychedelic Furs lead singer Richard Butler talks about their first album since 1991 and explains what's really going on in "Pretty In Pink."
One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.
The Jayhawks' song "Big Star" has special meaning to Gary, who explains how longevity and inspiration have trumped adulation.