Swift, who will open tonight’s CMT Music Awards, has been working on a top-secret number with the show’s host, comedian Bill Engvall.

While details are sketchy (duh, it’s top-secret!), one confirmed element of the routine is Def Leppard, Swift’s co-headliner on a recent episode of the series “Crossroads.”

Other rumors circulating in the blogosphere say the number involves the NFL and T-Pain!

“Well, the T-Pain thing, it’s not really specified what that collaboration is yet,” Swift explained. “It’s been really fun to keep that a secret, because we’ve never confirmed if it’s a performance or if it’s something else. You never know. You know, you should watch it.”

Sage advice indeed.

Speaking of T-Pain, the king of Auto-Tune is among this year’s crop of nominees for the BET Awards, joining Lil Wayne and Keri Hilson with four nods each.
Top nominees include Beyoncé and T.I., with five each.

Beyoncé is also scheduled to perform during the June 28 ceremony, along with Kanye West, Maxwell, Young Jeezy, Ne-Yo, Soulja Boy Tell ‘Em and host Jamie Foxx.

Tuesday, June 16
David Cook – “The Ellen DeGeneres Show” – rerun
Jerry Lieber, Mike Stoller – “The Tavis Smiley Show”
MC Hammer, John Caparulo, Kevin Hart, Sarah Colonna – “Chelsea Lately”
Gene Simmons – “The Hour with George Stroumboulopoulos” – rerun
Ian McLagan & the Bump Band – “Late Show with David Letterman”
Gavin Rossdale – “The Tonight Show with Conan O’Brien”
Horatio Sanz, Selena Gomez, Hank Williams Jr. – “Late Night with Jimmy Fallon”
Jonas Brothers – “Jimmy Kimmel Live!”
Jeff Foxworthy, Gavin DeGraw – “Late Late Show with Craig Ferguson”
Diane Birch – “Last Call with Carson Daly”

Wednesday, June 17
Shirley Jones, Marty Ingels – “The View”
Keane – “The Ellen DeGeneres Show” – rerun
Loni Love, Brad Wollack, Heather McDonald – “Chelsea Lately”
Alanis Morissette – “The Hour with George Stroumboulopoulos” – rerun
Incubus – “The Tonight Show with Conan O’Brien”
Street Sweeper Social Club – “Late Night with Jimmy Fallon”
Rosanne Barr – “Jimmy Kimmel Live!”
Zee Avi – “Last Call with Carson Daly”

Thursday, June 18
Rosanne Barr – “The Tavis Smiley Show”
Holly Williams, Bryan Callen, Chris Franjola – “Chelsea Lately”
Phoenix – “Late Show with David Letterman”
The Dead Weather – “The Tonight Show with Conan O’Brien”
The Fray – “Late Night with Jimmy Fallon”
Kathy Griffin, Ben Harper – “Jimmy Kimmel Live!”
Metric – “Late Late Show with Craig Ferguson”
Peaches – “Last Call with Carson Daly”

Friday, June 19
George Lopez, Mario Cantone, Lewis Black – “The View”
New Kids on the Block – “Live with Regis and Kelly” – rerun
Arden Myrin – “Chelsea Lately”
Billy Bob Thornton and The Boxmasters – “The Bonnie Hunt Show” – rerun
The Sounds – “Late Show with David Letterman”
Holly Williams – “The Tonight Show with Conan O’Brien”
Kathy Griffin, The Ting Tings – “Last Call with Carson Daly”

Saturday, June 20
Bettye LaVette, Pinetop Perkins – “Austin City Limits” – rerun
Jonas Brothers – “Saturday Night Live” – rerun