The biggest hit of 2015 was "Uptown Funk," a collaboration between Bruno Mars and guitarist/producer Mark Ronson. Ronson says making it took "six or seven months of chasing Bruno around on tour."
Shaggy wrote his swaggering hit "Boombastic" after learning what "shag" means in the UK.
"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.
Tom Cochrane wrote "Life Is A Highway" to pull himself out of a funk following an exhausting humanitarian trip to Africa.
Ronnie Spector nailed the vocal for The Ronettes song "(Walking) In the Rain" on the first take -- unheard of in the perfectionist producer Phil Spector's world.
Taylor Swift's "Shake It Off" was inspired by how she'd learned to deal with all the false rumors that circulated about her. She realized she could either let it get to her or "just shake it off."
David talks about videos he made for Prince, Alabama, Big & Rich, Sheryl Crow, DMB, Melissa Etheridge and Sisters of Mercy.
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."
Toto's keyboard player explains the true meaning of "Africa" and talks about working on the Thriller album.
Ozzy, Guns N' Roses, Judas Priest and even Michael Bolton show up in this Classic Metal quiz.
The Red Hot Chili Peppers have some rather unusual song titles - see if you can spot the real ones.
The '70s gave us Muppets, disco and Van Halen, all which show up in this groovy quiz.