
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."

The definitive Dave Matthews Band song, "Ants Marching" is a look at monotony, something they avoid by improvising at concerts and mixing up their setlists.

The Temptations sang backup on "Super Freak" by Rick James. He mentions them in the song when he says, "Temptations, sing!"

The Kate Bush song "Why Should I Love You?" is a collaboration with Prince. He completely re-worked her demo, so Bush spent a lot of time piecing it back together to keep her imprint.

Hoyt Axton wrote the Three Dog Night hit "Joy To The World." He said the "Jeremiah was a bullfrog" line just came into his head after having a drink of wine.
Tyler talks about his true love: songwriting. How he identifies the beauty in a melody and turns sorrow into art.
Was Long Tall Sally a cross-dresser? Did he really set his piano on fire? See if you know the real stories about one of rock's greatest innovators.
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
The longtime BS&T frontman tells the "Spinning Wheel" story, including the line he got from Joni Mitchell.
Dave reveals the inspiration for "Feelin' Alright" and explains how the first song he ever wrote became the biggest hit for his band Traffic.
The stories behind the biggest hit songs about trucking.