The Boyz II Men hit "It's So Hard To Say Goodbye To Yesterday" is an a capella cover of a song from 1975 by G.C. Cameron that was used in the movie Cooley High to express the feeling of parting ways with high school friends.
Drake's "One Dance" was the first ever song to rack up one billion streams on Spotify.
"Whole Lotta Love" was Led Zeppelin's only US Top 10 hit, charting at #4. Many of their songs, including "Stairway To Heaven," were not released as singles, as it was considered bad form in the UK to make fans pay for singles that were also on albums.
"Mickey" by Toni Basil was originally a song called "Kitty" by a male group. She picked the new name after Micky Dolenz of The Monkees.
The lyric to "Hold On" by Wilson Phillips was inspired by Chynna Phillips' struggles with addiction. "Hold on for one more day" is something she heard in AA meetings.
Sir Mix-A-Lot is credited as a writer on The Pussycat Dolls' biggest hit, "Don't Cha," because it interpolates his 1988 song "Swass," where he goes, "Don't you wish your boyfriend was swass like me?"
Roger reveals the songwriting formula Clive Davis told him, and if "Eight Miles High" is really about drugs.
The "All I Want" singer went through a long depression, playing some shows when he didn't want to be alive.
The drummer for Anthrax is also a key songwriter. He explains how the group puts their songs together and tells the stories behind some of their classics.
Ozzy, Guns N' Roses, Judas Priest and even Michael Bolton show up in this Classic Metal quiz.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.
Dean's saga began with "Ariel," a song about falling in love with a Jewish girl from New Jersey.