Avicii's "Wake Me Up" was the first ever song to reach 200 million streams on the Spotify music streaming service.
Justin Timberlake originally wrote "Gone" for Michael Jackson, but his team turned it down, so 'N Sync cut it instead.
The thunderclap sound heard in the Bee Gees song "Tragedy" was made by Barry Gibb with his mouth.
Mike Nesmith wrote Linda Ronstadt's first hit, "Different Drum," before he joined The Monkees. He played an intentionally bad version of it on the show.
Neil Young rarely allows his songs to be sampled, but he let the Canadian group Redlight King use "Old Man" in their 2011 song, also called "Old Man."
Fleetwood Mac's "Gypsy" is about Stevie Nicks' best friend, who died of leukemia.
The Yardbirds drummer explains how they created their sound and talks about working with their famous guitarists.
Elvis, Little Richard and Cheryl Cole have all sung about Teddy Bears, but there is also a terrifying Teddy song from 1932 and a touching trucker Teddy tune from 1976.
Gary Lewis and the Playboys had seven Top 10 hits despite competition from The Beatles. Gary talks about the hits, his famous father, and getting drafted.
Tyler talks about his true love: songwriting. How he identifies the beauty in a melody and turns sorrow into art.
Tom talks about the evolution of Cinderella's songs through their first three albums, and how he writes as a solo artist.
The rock revolutionist on songwriting, quitting smoking, and what she thinks of Rush Limbaugh using her song.