"Sing" was inspired by a girl that Ed Sheeran met in Las Vegas in the summer of 2013, when "one thing led to another and now she's kissing my mouth."
Kacey Musgraves originally offered "Follow Your Arrow" to her friend Katy Perry. However, Perry thought Musgraves should record the song herself as it seemed, "like something that you would totally say."
Katherine Heigl played Josh Kelley's love interest in the video for his 2005 song "Only You." They met on the shoot, became a real-life couple, and got married two years later. That's good casting!
The video for Iggy Azalea's "Fancy" pays homage to the classic 1995 film Clueless with the rapper playing Cher and featured singer Charli XCX portraying Tai. It was filmed at some of the same locations used in the movie.
"St. Elmo's Fire (Man In Motion)" was not written for the movie, but for Rick Hanson, a wheelchair athlete whose 1985 "Man In Motion" tour logged 24,856 miles on his wheelchair in 34 countries while raising $26 million for spinal cord research.
Richard Marx' debut single "Don't Mean Nothing" features Joe Walsh on guitar.
The Garbage drummer/songwriter produced the Nirvana album Nevermind, and Smashing Pumpkins' Gish and Siamese Dream.
Daryl Hall's TV show is a hit, and he's been inducted into the Rock and Roll Hall of Fame - only one of these developments excites him.
The Sevendust frontman talks about the group's songwriting process, and how trips to the Murder Bar helped forge their latest album.
Rob Halford, Richie Faulkner and Glenn Tipton talk twin guitar harmonies and explain how they create songs in Judas Priest.
The Jayhawks' song "Big Star" has special meaning to Gary, who explains how longevity and inspiration have trumped adulation.