"Heart of Glass" was Blondie's first foray into disco, which turned off some fans. Debbie Harry said they did it because they "wanted to be uncool."
It has long been speculated that the Soundgarden song "Black Hole Sun" came from the name of a sculpture in Seattle, but according to their frontman Chris Cornell the title came from a phrase he misheard on the news. The band's name did come from a sculpture.
Songwriter Wayne Carson came up with "Always On My Mind" on the phone to his wife when he was apologizing to her for being stuck at the office.
"On The Floor" by Jennifer Lopez samples the 1989 song "Lambada," which you might remember is about "The Forbidden Dance."
Enrique Iglesias' single "Bailando" was the first ever Spanish-language song to reach one billion views on YouTube.
The song "Without You," a hit for Nilsson in 1972 and Mariah Carey in 1994, was written and originally recorded by Badfinger in 1970.
Greg talks about writing songs of "universal truth" for King Crimson and ELP, and tells us about his most memorable stage moment (it involves fireworks).
Petula talks about her hits "Downtown" and "Don't Sleep In The Subway," and explains her Michael Jackson connection.
When he was playing Ozzfest with Black Label Society, a kid told Zakk he was the best Ozzy guitarist - Zakk had to correct him.
Can you be married in one country but not another? Only if you're part of a gay couple. One of the first famous singers to come out as a lesbian, Janis wrote a song about it.
Writing with Phil Lynott, Scott saw their ill-fated frontman move to a darker place in his life and lyrics.
Graham Nash tells the stories behind some of his famous songs and photos, and is asked about "yacht rock" for the first time.