1.Leona Lewis’ breakthrough hit “Bleeding Love” was co-written by Jesse McCartney (and OneRepublic’s Ryan Tedder) — who intended to put it on his own album, but instead gave it to Lewis.
2.The success of Nelly and Kelly Rowland's "Dilemma," delayed the release of Beyoncé’s debut solo album.
3.André 3000 wrote "Ms. Jackson" as a way to apologize to his ex Erykah Badu's mother about their relationship falling apart without having to apologize to her in person.
4.When Beyoncé and Jay-Z got married their first dance was to "Crazy in Love."
5.In 2008, "Womanizer" became Britney Spears' first No. 1 hit since "…Baby One More Time," which had topped the charts almost a decade earlier.
6.Billboard named Mariah Carey's "We Belong Together" the biggest and most played song of the '00s.
7.Gwen Stefani wrote “Hollaback Girl” as a diss track aimed at Courtney Love.
8.Kanye West originally wrote "Gold Digger" for rapper Shawnna's debut album Worth Tha Wait, but she passed on the song.
9.Madonna's "Music" (which was released in 2000) is currently her last No. 1 single — which is crazy.
10.According to Jermaine Dupri he inspired Usher's "Burn," saying, "[Usher's] relationship with [TLC singer] Chilli was going into flame-out, and I told him to...'let it burn.' Hence the song."
11.Contrary to rumors, "Umbrella" was not turned down by Mary J. Blige and Britney Spears before being offered to Rihanna. The writers of the song, The-Dream and Tricky Stewart, offered it to all of them at the same time.
12.When Coldplay went No. 1 with "Viva La Vida" in 2008, it marked the first time that a British group reached the top of the Hot 100 since 1997, when the Spice Girls reached it with "Wannabe."
13.Justin Timberlake's "What Goes Around... Comes Around" isn't about Britney Spears, it's about Elisha Cuthbert.
14.Eminem did not have a Hot 100 No. 1 until 2002, with "Lose Yourself."
15.Nelly Furtado regrets that she, Timbaland, and Justin Timberlake released their diss track "Give It to Me."
16.Shaggy did not write "It Wasn't Me" about himself, he was actually inspired by Eddie Murphy's classic 1987 stand-up special, Raw.
17.In 2007, with "Big Girls Don't Cry," Fergie became the first woman since Christina Aguilera (in 2000) to have three No. 1 songs from the same album.
18.Janet Jackson's "All For You" was the longest-running No. 1 song of 2001. It spent an impressive seven consecutive weeks at the top of the charts, but it's not her longest-running No. 1 song.
19."Empire State of Mind" was Jay-Z's first Hot 100 No. 1 song that featured him as a lead artist.