Lil Wayne does an unlikely rap in a remix of the Joe Jonas song "Just In Love." The pair met at the 2008 MTV Video Music Awards.
John Legend wrote "All Of Me" about his fiancée Chrissy Teigen. He sang it to her at their wedding ceremony in Como, Italy.
Eddie Van Halen played the guitar solo on "Beat It" as a favor to Quincy Jones, who produced the album.
The song "Sadeness" by Enigma (the one with the chanting monks), got its name from the French novelist Marquis de Sade, who believed sex had to be painful in order to be pleasurable - thus the word "sadism."
"Santa Claus Is Coming To Town" was first recorded in 1934 by Eddie Cantor, but in 1962 it was one of the first hits for The Four Seasons, who became one of the most popular groups of that decade.
Train wrote the 2011 song "Brand New Book" for the TV show The Biggest Loser - part of the song was used in the opening credits.
Here's what happens when an opening act is really out of place with the headliner, like when Beastie Boys opened for Madonna.
The head of Drake's estate shares his insights on the late folk singer's life and music.
Did this Eagle come up with the term "Parrothead"? And what is it like playing "Hotel California" for the gazillionth time?
Mike is lead guitarist with Tom Petty & the Heartbreakers, and co-writer of classic songs like "Boys Of Summer," "Refugee" and "The Heart Of The Matter."
Stone Temple Pilots bass player Robert DeLeo names the songs that have most connected with fans and tells the stories behind tracks from their Tiny Music album.
With the band in danger of being dropped from their label, Alice Cooper drummer Neal Smith co-wrote the song that started their trek from horror show curiosity to the Rock and Roll Hall of Fame.