Billboard Bits: Unreleased MJ Tracks Hit the 'Net, Katie Couric to Appear on 'Glee'

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Aug. 31, 1987: Jackson's seventh studio album, "Bad," is released. With five No. 1 singles, "Bad" sells at least 22 million copies worldwide.

Billboard Bits serves up the best bite-sized nuggets of music news and gossip.

Michael Jackson Non-Album Songs Leak

Two new Michael Jackson songs, "Blue Gangsta" and "All I Need," leaked to the Internet yesterday (Dec. 1) via the Oh No They Didn't news aggregator community. Neither of the songs are featured on "Michael," the new MJ set that hits retailers Dec. 14. There has been no confirmation from the estate that these songs are truly from the King of Pop, or what studio sessions they stemmed from, so take the news with a grain of salt, but the tracks sound legitimate. (Idolator)

Katie Couric to Appear On Episode of "Glee"

Although "CBS Evening News" anchor Katie Couric criticized "Glee" actors for posing provocatively on the November cover of GQ, she has signed on to make an appearance playing herself on the show. Rumor has it she will be featured on the post-Super Bowl episode. (NY Post)

German Hackers Attempt to Extort Unreleased Music From Gaga, Timberlake, Clarkson

Two German hackers have been accused of worming their way into the computers of Lady Gaga, Justin Timberlake and Kelly Clarkson to leak unreleased material. The FBI and German Authorities are investigating the duo after Clarkson realized some of her unreleased music was circulating around the Internet. (NY Mag)

Taylor Swift Creates Holiday Cards

Taylor Swift is spreading the holiday cheer with her new collection of holiday cards for American Greetings. This season, Swift fans can pick up 10 new Swift written or inspired cards. The cards will be available at select retailers, and designs feature joyous winter scenes, delicious holiday cookies and snow-covered Christmas trees. It's official: She's everywhere.

Billy Joel Recovering After Hip Surgery

"Piano Man" Billy Joel has been released from the hospital after ongoing double-hip replacement surgery last month. "Billy is home at his Oyster Bay, NY home and is feeling great," Joel's publicist said. He is reportedly under the care of his ex-wife, super model Christie Brinkley. (Rolling Stone)

(Reporting by Jillian Mapes, Walter Frazier and Megan Vick)