Adele's "Someone Like You" is the first song with just piano and voice to hit #1 in the history of the Billboard Hot 100, which started in 1958.
The title "25 Or 6 To 4" by Chicago refers to the time it was written: either 25 minutes to 4 (3:35) or 26 (3:34).
The first #1 hit with a rap was "Rapture" by Blondie in 1980. Debbie Harry's rhymes left lots of room for improvement.
Walk The Moon vocalist Nicholas Petricca got the idea for "Shut Up and Dance" when he and his girlfriend were taking forever to get drinks at a Los Angeles club bar. Petricca was getting frustrated, so his girlfriend told him to "shut up and dance with me!'"
Kacey Musgraves offered "Follow Your Arrow" to her friend Katy Perry, but Perry thought Musgraves should record the song herself, telling Kacey it seemed "like something that you would totally say."
When it topped the chart in 2012, Dierks Bentley's "5-1-5-0" became the first #1 Country hit with a title that's all numbers.
The Red Hot Chili Peppers have some rather unusual song titles - see if you can spot the real ones.
Dan cracked the Top 40 with "Ritual," then went to India and spent 2 hours with the Dalai Lama.
Talking Heads drummer Chris Frantz on where the term "new wave" originated, the story of "Naive Melody," and why they never recorded another cover song after "Take Me To The River."
Do you know who wrote Patti Smith's biggest hit? How about the Grease theme song? See if you can match the song to the writer.
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
Brian has unearthed outtakes by Fleetwood Mac, Aretha Franklin, Elvis Costello and hundreds of other artists for reissues. Here's how he does it.