Cheap Trick hated the ballad "The Flame" but recorded it because they needed a hit, and the song delivered, going to #1.
Mike Campbell from Tom Petty & the Heartbreakers played the slide guitar on "Sixth Avenue Heartache." There is a connection here - Wallflowers lead singer Jakob's dad, Bob Dylan, played with Tom Petty in The Traveling Wilburys.
The first time Jimmy Page, Robert Plant, John Bonham and John Paul Jones all recorded together in the studio was when they backed American singer PJ Proby on his 1969 album Three Week Hero.
Taylor Swift became the first woman in the history of the Hot 100 to succeed herself at #1 when "Blank Space" dethroned her previous single, "Shake It Off," from the top spot in 2014.
Paul McCartney wrote "Ebony and Ivory," his duet with Stevie Wonder, after a tiff with his wife Linda. "It was like, 'Why can't we get it together- our piano can,'" he explained.
The Mary J. Blige song "No More Drama" samples the theme to the appropriately dramatic soap opera The Young And The Restless.
Is Owl City on a quest for another hit like "Fireflies?" Adam answers that question and explains the influences behind many others.
Songs about drugs, revolution and greed that have been used in commercials for sneakers, jeans, fast food, cruises and cars.
A renowned guitarist and rock revivalist, Dave took "I Hear You Knocking" to the top of the UK charts and was the first to record Elvis Costello's "Girls Talk."
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.
Did Al play on a Beach Boys record? Did he have beef with George Lucas and Coolio? See if you can spot weird but true stories.
He's a singer and an actor, but as a songwriter Paul helped make Kermit a cultured frog, turned a bank commercial into a huge hit and made love both "exciting and new" and "soft as an easy chair."